A/N Thank you for all the comments you've made after the last chapter!

As I mentioned, someone arrives at Seattle Grace and makes Mer want to go cage fighter… :) Hope you enjoy!

**********************************************************************************

Meredith closed a paper folder with anger and threw it over her desk, sending it flying onto the floor. The documents that were stacked inside spilled all over. But Meredith continued to sit in her chair, fuming. Why couldn't the Greys stay the hell away from her and her hospital? Since she dismissed Susan two weeks ago, she had to endure countless phone calls on her part and even once from Thatcher, and now… now her half-sister, Alexandra Grey, was applying for a place in the program at Seattle Grace.

Technically, Meredith didn't have any reason to suspect it had anything to do with the want to meet her. Grace was currently ranked as the third teaching hospital in the country, graduates of medical schools would kill for a chance to have their internship here. It was probably the most natural choice for that girl, close to home, family and friends. Meredith had to admit she was good, not as good as her of course, her career was already skyrocketing at the age of 24, she thought with grim satisfaction. Her smirk disappeared however as she allowed the realization to sink in that she had to be objective and objectively speaking, Alexandra Grey probably wouldn't have much trouble to be accepted.

The phone rang. Meredith pressed the intercom angrily.

"Dr. Grey, Dr. Shepherd's claiming you called him to come," said Patricia impatiently.

"I did," snapped Meredith.

"You… did. Very well, Dr. Shepherd, go on."

Derek entered the office with a self-satisfied grin. For once, he defeated Patricia. A knight that slew a great ugly dragon guarding his princess's door would feel the same. But as his eyes fell on Meredith, he began to wonder if he shouldn't have spent some more time chatting up the secretary.

Meredith had furious fire in her eyes and judging by the messy heap of documents on the floor he should be careful for any other objects flying around.

"Meredith, what's wrong?" he asked with concern and moved up to pick up the manhandled folder.

"My stepsister wants to start her medical career in my hospital," she gritted out closing her eyes for a moment.

"She's a doctor?" Derek raised his eyebrows in surprise and sat down across her.

"A wannabe surgeon," she sighed.

"She's applying for internship here," stated Derek with understanding. "What are you going to do?"

"I would love to reject her application," said Meredith vindictively, "but…"

"But?"

Meredith stood up and showed him Alexandra's CV.

"Top of her class at Harvard?" read Derek. "She seems to be following in your footsteps."

"Oh, please," snorted Meredith. "She's gonna be a lowly intern, not a chief of surgery."

Derek smiled leniently, "You're ready to accept her? To work with her?"

Meredith tapped her fingers on the desk distractedly. No, she wasn't ready. Grace was her hospital. She was settling here. She was still 29 and had pretty much all her career before her but… staying in Seattle… with Derek… felt good. And would feel even better if she wasn't forced to watch her stepsister's face every day.

"I think I'm going to organize a committee this year," she said. "Three members will suffice. They'll choose new interns. If Alexandra doesn't get a place, I won't have ethic board breathing down my neck. You want to be included?"

"What, in the committee? No," he shook his head with a smile and took her hand in his. "I don't want to be the object of your wrath if she gets accepted."

She grinned against herself, "Sorry, that's not why I called you. Before I got distracted with my family affairs, I had a call from Dr. Miles. She's already in Seattle, and will be here at 4 p.m. We'll greet her together."

"Ahh, finally," he smiled which brought a scowl on her face.

"So not fair," she pouted.

"I agree," he smirked at her and stood up encircling her waist with his arms. "You have the title of the chief and mountains of paperwork whereas I have a fancy trial."

"All thanks to me," she squinted at him and combed his hair with her long fingers.

Dr. Gretchen Miles, a renowned surgeon, choose Seattle Grace for her clinical trial. Meredith was eager to cooperate with her but she wouldn't have time and well, it wasn't her baby. She wouldn't have the decisive voice. Derek though agreed to take part in the study and would be working alongside Dr. Miles.

"So, Dr. Miles will be at four…" he started and Meredith recognized the mischievous note in his voice that always indicated he wanted… "That means we have a bit of time just for the two of us…"

He gripped her thighs and placed her on her desk breathing her in, his nose grazing her neck.

She giggled, her hands travelling down his strong back. "Patricia's right behind the wall."

"So?" he kissed the side of her mouth. "We enjoy the thrill of risk…"

"She's gonna hear…" she breathed out feeling his hand closing on her breast and testing its weight.

"Let her hear," he chuckled.

"No!" she squealed as he bit on her neck lightly.

"Dr. Grey?" Almost immediately, Patricia knocked on the door to the office, alarmed by the mysterious noises. "Are you alright?"

"Everything is fine, Patricia. Thank you," shouted Meredith over the door and lowered her voice significantly speaking to Derek, "See? She hears everything."

"Oh, come on," insisted Derek sliding his lips from her jaw to her neck and clavicle. "We'll be quiet…"

"Not possible," she whispered. "Besides… I don't want to be quiet. I want to scream your name while you fuck me hard."

He ground his hardening length against her middle, "Cocktease."

"You'll pay for that," she purred pushing him away. "On-call room on the next floor, fifteen minutes."

"I'll be there," he winked at her and left, praying his Little Derek to stay calm until he got there.

**********************************************************************************

"You know, I see more and more disadvantages of the trial," took up Derek as they were waiting in the lobby for Dr. Miles.

"Yes? What disadvantages, Dr. Shepherd?" she asked professionally, turning to him, her arms crossed over her chest.

"Think about all the time I'll have to spend in the lab or with patients instead of with you."

"Where are your ambitions, Dr. Shepherd?" she shook her head at him.

"In your bed," he quipped his eyes taking up the stormy color. "Or in mine if you're in it."

She bit her lip not to smile. "Don't look at me like that," she warned him. "We're in the middle of the lobby."

"We've talked about this, Mer," he sighed in frustration. "When are we going to stop the acting?"

"Soon," she waved her hand dismissively. "Now it's not the time to discuss it. I think… I think our guest has just arrived."

They both turned to face the short procession that was approaching them and Meredith… felt first misgivings about the arrival of Dr. Miles leading the group of newcomers.

She saw the neurosurgeon's photos in medical press earlier but they didn't do her justice. She must be a couple of years older than Meredith, probably around Derek's age, but she looked flawless and her legs… Meredith always prided in her impeccable ones but she thought she looked like a dwarf compared to Dr. Miles.

"You must be Dr. Grey," smiled the woman reaching out her delicate manicured hand.

Meredith's eyes quickly swept over her riddleless face and dark rich hair. Isabella freaking Rossellini…

She feigned a smile and shook her hand, "Welcome to Seattle Grace, Dr. Miles. We're honoured to be hosting your trial."

"Don't be silly, it's Gretchen. And this is…?" she squinted at Derek.

Meredith's jaws clenched dangerously but she controlled herself and presented him with reservation, "It's Dr. Shepherd."

"Ah," Gretchen's face all lit up. "The Dr. Shepherd I'll have the pleasure to work with?"

"It's nice to meet you, Dr. Miles," Derek shook her hand. "Thank you for including me in your trial."

"You're very welcome," her lips widened in a teeth showing grin. Meredith felt that if she had a scalpel at hand she would stick it blindly in Dr. Miles's ivory neck. The coy undertones in her voice called for a cold-blooded murder.

"And I've already said, I'm Gretchen. Let's drop the titles," she battled her eyelids at the man before her as though she would like them to drop clothes. "We're gonna spend lots of time together…"

"Derek," he nodded his head.

"Oh, and these are my two assistants," she pointed at a man and a woman behind her. "Dr. Cameron Michaels and Dr. James Willard."

"Perhaps you could take me to my office," asked Gretchen.

"Of course," said Derek. "Dr. Grey, can you lead the way?"

She narrowed her eyes at him and departed with a nod. She well could. She wouldn't let them by themselves. She breathed with trouble. How could she survive the three months of the envisioned stay of Gretchen Miles at Seattle Grace? And she served Derek to that woman on a silver plate…

**********************************************************************************

Meredith stack closely to Derek and Gretchen pretending to be greedy for all details concerning the trial until he was paged for his patient. Only then Meredith decided she had to take a break from Dr. Miles's presence or her face would freeze in a false smile forever.

But that was two hours ago and Meredith decided to examine the situation.

"Dr. Miles," she addressed the woman knocking on the door to her office. She wouldn't call her by her name, nothing would force her to treat her as her friend. "I wanted to check if you're acclimatizing well? Is everything to your advantage?"

"Yes, of course," Gretchen smiled warmly segregating her documents. "The equipment is marvelous and the staff simply wonderful… Dr. Shepherd especially, thank you for recommending him."

Meredith bit her tongue, she had been an idiot but maybe she should change her tactics…

"Yeah, well, about that," stated Meredith making a concerned face. "To tell the truth, I wasn't so sure about picking him. His mind is completely elsewhere these days."

"Elsewhere?" asked Gretchen curiously, picking up a cup of coffee from the desk.

"He's been more concerned with his private life than work lately," went on Meredith. "He met a love of his life and she's all he thinks about."

"That's how it is with relationships," shrugged the brunette with an indifferent smile. "The novelty will soon wear off and he won't dream about leaving the hospital." she crossed her legs confidently.

"I've heard it's pretty serious, they're going at it all the time, if you know what I mean," smiled sweetly Meredith.

"Well, he clearly has stamina," giggled Gretchen. "That's something any woman would like to put to test," she winked mischievously at Meredith.

Unknowingly to both of them, Nurse Debbie had halted outside the open door to the office, registering Shepherd's name with interest.

Meredith lifted the corners of her mouth with difficulty. Was that pale witch dumb or just pretending? Any normal, and decent, woman would get the hint by now that the man was off limits.

"I'm not sure any woman would put that to test anymore," she said bluntly. "His girlfriend broke his penis a couple of weeks ago… and I've heard he can't… get it up since then…"

Debbie covered her mouth with her hands not to whimper. Poor Dr. Shepherd!

"Poor Dr. Shepherd," smirked Gretchen. "But I think that a proper stimulation could do it."

Meredith saw red. Proper stimulation? She was giving Derek the greatest pleasure a man could get from a woman. She eyed Gretchen's lips with superiority, two thin lines. As for the breasts, Meredith recognized her defeat. Gretchen was bigger in general and in consequence, every other part of her was bigger.

"Or I could offer him my help," went on Gretchen. "As you know, I'm a specialist in connectivism. I would love to take care of Derek's damaged nerves."

"How lucky that you joined us," Meredith strained her face muscles to stretch in a smile. "Let me know if you need anything."

"Thank you," Gretchen smiled sweetly. "We're gonna have so much fun together."

"Yay," muttered Meredith under her breath walking out of the office, not noticing Nurse Debbie scurrying away to tell her friends the news of the day.

**********************************************************************************

It was about ten p.m. and the corridor was empty. Meredith stood up on the tips off her toes as much as her high heels allowed her to and started to creep towards Gretchen's office. The dark-haired doctor insisted to have late night brainstorm with her coworkers but Meredith wasn't born yesterday. Plus, you didn't meet a man like Derek Shepherd every day, Miles would probably waste no time in catching him in her clutches.

And she was Meredith's complete opposite, both in body and character. She was taller, broader, dark-haired, and adding to all that, smiley, flirty and giggly. What a whore… thought Meredith dryly. But she remarked with relief that she was also older and was much closer to getting all wilted and wrinkled.

"I walked over there two minutes ago and I assure they weren't fornicating," Bailey's sarcastic comment made her jump and grasp the wall for support.

"You scared me to death!" accused Meredith rearranging her clothes and hair to save some dignity. But hell, she was more interested in something else. "What were they doing?"

Bailey frowned but took pity on her and said, "He was reading scans while she was trying to show him leg. What a waste of time, in my opinion, there were her assistants anyway."

"What a brainless slut!" huffed Meredith pacing up and down.

"Isn't she," nodded Bailey. "Drooling over Shepherd…"

"Yeah!" exclaimed Meredith.

"… on her first day at work…" went on Miranda stoically.

"Damn right!"

"Probably anxious to drag him to the nearest supply closet…"

"Exactly! Wait!" Meredith's head whipped at her. "What? I'm not anything like her! I love him!"

Bailey's expression softened and she sighed, "And he's completely besotted with you. He doesn't want to do anything with her other than professionally. He would have to be stupid and blind, which he's not. But don't tell him I said that. And… trust him."

"I do," she breathed out. Did she really? "It's her I don't trust!"

"You could always let more people in our little secret circle," remarked Bailey offhand. "Dropping a hint around a nurse will do the trick."

Meredith's eyes went wide.

"You've already used the nurse gossip system quite effectively today," snorted Miranda.

"I… didn't," Meredith shook her head frowning.

"You sure?" chuckled the plump doctor. "You might not want to face your lover boy tonight."

Meredith stared at her retreating back wondering what she meant.

**********************************************************************************

Meredith yawned, her head almost slipping from her palm onto her desk. She rubbed her eyes. Eleven p.m., she could've been home hours ago but she chose to wait for Derek. She suspected it was going to be long three months…

The door opened impetuously and he stormed in.

"Thank God, you're finished," said Meredith getting to her feet and reaching for her briefcase. "I'm dreaming of a hot shower and bed."

"Not so fast," he stood firmly with his arms folded defensively across his chest. "We've got something to talk about."

Meredith eyed him cautiously. He had a scowl on his handsome face and his eyes were flashing. Why was he angry? Never mind, angry Derek was hot…

"I'd like you to tell me why I've been getting impotence advice all day," he snapped.

Oh, crap… cringed Meredith. How did that get out? Wait, the nurses…?

"Uhm, you have problems?" asked Meredith innocently. "Why didn't you tell me? I mean, everything worked more than fine last night."

He let out an ironic laugh, "Cut that shit, Meredith. I know you told Gretchen that I… wait, what was it, ah yes, that I can't get it up!"

She approached him with a coy smile and placed her palms on his taut abdomen. "But we both know you can, so… what's the problem?"

"You weren't the one at the receiving end of those sympathetic looks," he shrugged, her hands caressing his torso distracting him.

"I'm sorry," she purred into his ear, hooking her fingers under his belt.

"I'll accept your apology," he muttered. "You were just jealous after all…"

"I was not!" she said indignantly jerking from him.

"Yes, you were," he smirked.

"I was not!"

"I realized that when Dr. Miles offered her skillful help with the ailment Dr. Grey was so kind to reveal."

"I'm repeating once more, I'm not jealous! I don't get jealous!" she said irritably.

"Sure," he let out a small laugh.

"She's just one filthy whore!" yelled Meredith. "Flaunting herself at you!"

"And you're all green," he looked at her with satisfaction.

She bit her lip in defeat and turned away from him. Further arguing was useless. "Maybe!"

He gently caressed her arms standing behind her.

"Thank you," he whispered. "But where did you get the idea that I'd jump at her?"

"She's attractive," she remarked tracing invisible patterns on her desk.

Derek turned her over in his arms."Is she?"

"Even if you're completely cheesy most of the time, you're still a male and as such you must have noticed. Especially if that was her point."

"Meredith," he shook his head at her chuckling. "I'm not interested in other women. Dr. Miles is just a coworker for me and I don't look for anything else than that."

Meredith felt a bit more at ease.

"She has bigger boobs," she argued ready for him to defend her.

"I frankly don't see why you're comparing yourself with her," he sighed and snaked his hands from her shoulders to her chest cupping her breasts into his large hands. "But I happen to like your boobs very much, they fit right into my hands…"

"Mhm," she moaned breathlessly closing her eyes. "I have shorter legs…"

"Just ideal to hook around my waist so I can go deeper inside you," he murmured.

"Yes…" she groaned. "I'm sorry, Derek… I was just… and she was lifting a leg to pee on my territory."

Derek burst out laughing bringing her tightly against his chest. "It's okay… but you know, you can mark your territory so that everyone can see."

"You mean coming out of the closet?" she sighed breaking away from him.

"Yes, it's high-"

"I'm… I'm not ready," she interrupted. "Besides, how do you imagine doing this? Telling one of the nurses that you can get it up for me all the time? Letting someone walk on us in the supply closet? Sticking your tongue into my mouth in the middle of the lobby?"

"Wow," Derek commented on her outburst. "I've been thinking… about more subtle options."

"You've been thinking?" she raised her eyebrows. "For how long?"

"Long," he replied dismissively. "Let's go to the intern mixer together."

She stared at him speechlessly taking in his hopeful expression. They mentioned stopping to hide from everyone a couple of times but he was… planning it actively.

"It's…" she trailed off.

"It's three weeks from now," he went on with a calm soothing voice. "We have some time to get used to the idea. I think it's a perfect occasion."

"Everyone… everyone will be there…" Meredith rubbed her temple slowly.

"Well, that's the point," he admitted. "The more people see us, the less gossip there will be."

"I… I don't know, Derek," she muttered and he was able to detect the note of panic in her voice. "My sister might be present at the mixer… I… have to think about it!"

"We have three weeks, Mer," said Derek. "Now let's go home."

"Go first," she said quietly. "I'll join you in five minutes."

He nodded reluctantly and departed. Meredith knew he'd be waiting for her in his jeep at the back entrance to the parking lot, as always. He was giving her time again but Meredith had no illusions. He might be supporting and soothing but he was more and more insistent and Meredith recognized his absolute right to do that. He had been the more giving party in this relationship so far. Maybe it was time to leave her warm comfortable cocoon? Well, not that comfortable anymore thanks to Gretchen Miles.

**********************************************************************************

A/N Ah, I just love abusing Derek and his ego…

About coming up with Dr. Miles I'll just say that… Dr. Frankenstein must have felt similar having created his Monster…

You know I love to hear your afterthoughts!

Em :)