A/N: My two reviewers asked for Derek's reaction and although this was meant to be a one shot, I decided to try to please them. So here's chapter 2.

Derek laid in bed wide awake. He had been trying to fall asleep for almost two hours now but no luck. He kept tossing and turning and all he could think about was what his wife had told him.

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When he came back from work that morning and saw the empty bowls in the kitchen sink he assumed his girls made the best of their night alone by having a girl talk over some ice cream. However, the moment he walked into the bedroom and found his wife and daughter curled together in bed, Addie's head resting on her mother's chest as they slept, he knew it must have been a serious "talk".

"Daddy" Addie called smiling. "'Morning"

"'Morning cutie" he greeted back kissing the top of her head.

"How was work?" she asked sitting up careful not to wake Meredith.

"Pretty boring. I managed to catch up on paper work" he answered.

"Eww, it must have been extremely boring then" she concluded.

"Yeah … Um, baby girl we should really wake mommy. She has to get ready for work" he told her.

"You do it" she said hoping up from the bed "I'll be downstairs" she added with a grin.

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Derek thought he saw Meredith and Addie giving each other an odd look when he walked into the kitchen behind his wife ten minutes later.

"So, who needed comfort food?" he asked smiling and saw Meredith almost choke on her … milk? Since when was his wife drinking milk?

Addie looked at her expectantly. "Mommy?" she called.

"Derek, um, there's something I need to tell you ..." Meredith started.

"Ok ..." he said. "What is it? Is something wrong?"

"That kind of … depends" she mumbled.

"Now you're freaking me out. What is it?" he asked concerned.

Addie sighed as she decided to take matters into her own hands.

"Mommy's pregnant" she blurted "We're gonna have a baby"

Derek wasn't quite sure he heard her right. A what?

"A … baby?" he asked in shock.

"U-huh" Addie confirmed "One of those little cute squirmy "things" that cry and eat and poo. Apparently I was one, too, at some point. I'll never admit it though" she shrugged.

"Is it true?" Derek asked turning to his wife.

"That Addie was a little cute squirmy "thing" at some point? Yes" Meredith tried to joke.

"Mer, please ..."

"Yeah ..." she breathed "it's true". They were both silent. Then he finally spoke.

"It's … we … have to talk about this"

"We do" she agreed "And we will. But not now, because now I have to go to work. And you, you should get some sleep" she said kissing him on the cheek.

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And here he was not being able to fall asleep. A baby ... The last time his wife had told him they were going to have a baby she made him the happiest man alive …But then there had been that fateful day when the doctor told them that both Meredith's and the baby's life could be endangered if she insisted on carrying the baby to term. And of course she insisted. And she had no idea how worried he was. She didn't know that he used to check on her several times a night just to make sure she was alright. To make sure they were alright. Because contrary to what Meredith (or angry hormonal Meredith) believed he did love his baby girl. He loved her since day one and the thought of losing her had been heartbreaking, but losing them both …

And then there was the C-section and it's bittersweet aftermath, when he had been worried to death waiting for his wife to wake up from the anesthesia and cloud nine happy to hold his newborn baby daughter for the first time. But God did answer his prayers … Meredith woke up and from that moment on their lives revolved around Addison – Ellis Grey – Shepherd. And not just theirs … Derek smiled at the memories.

"You're such a beautiful little princess. Yes, you are. And I'm debating weather I should give back to your mommy and daddy or keep you … "

"I swear if someone had told me I would see the great Mark Sloan, Mark Sloan the manwhore cooing at a baby I would have laughed my ass off" Derek said shaking his head in disbelief.

"Shepherd, watch your language, will you? There's a baby in the room." Mark scolded not taking his eyes away from the girl.

"Yeah, Mark, MY baby. So why don't you give her back?" Derek said extending his hands to reach for the bundle in Mark's arms. "I'm her father!" he pointed out annoyed when Mark took the baby away from his reach.

"And I'm her godfather. I get to spoil her, it's in my job description" Mark shrugged.

"Meredith!" Derek turned to his wife "He won't give my baby!" he pouted pointing at Mark like a little boy who just had his favorite toy taken away from him.

"Oh, my God, she barely three days old and she already has both of you wrapped around her finger" Meredith concluded shaking her head.

Oh, yeah, Mark Sloan the manwhore proved to be the most wonderful godfather ever. And after a while Meredith and Derek finally realized that they had nothing to worry when Mark and Lexie babysat Addie (although Lexie did complain that she hardly got the chance to hold the baby).

The first time it happened the rumor traveled like gossip usually did at Seattle Grace, but people just laughed at the idea. The second time, it caused raised eyebrows and a few smiles. But the next time both Doctors Shepherd got stuck in surgery, what seemed like half of the female staff gathered on the floor where the daycare was to watch Mark Sloan pick up the Shepherd kid, carefully zipping her raincoat, going all "oh" and "ah" over some picture she had drawn especially for her "Uncle Mark", promising ice cream treats and trips to the Zoo on his first day off.

And Nancy … The moment Derek had called and asked her to be his daughter's godmother she decided that her niece would be the most spoiled little girl ever. Pointless to say that the "slutty intern" became Nancy's favorite sister-in-law (not that she had any other). Her own kids didn't look like her as much as little Addison did. And Meredith and Derek couldn't help but admit that sometimes Nancy was worse than Mark.

Like when Addie was five and she begged her to take her to look for squirrels on Derek's land. And Nancy obliged although she was wearing high heel shoes. Or when she fought with another mom over the last set of colored plastic rings that a seven year old Addie decided she couldn't live without.

And then it was him and Meredith, who would gladly watch a movie for the tenth time because Addie wanted to or listen to their daughter chatting about the last book she had read, even after a forty-eight hour shift. And no matter how much she loved Uncle Mark, Aunt Nancy, grandma Carolyn, Aunt Cristina, Stevie (Cristina's son and Addie's best friend) or little Susie (Mark and Lexie's eldest child and the cutest baby in the universe, according to her cousin), Addie's favorite people were her mommy and daddy.

"Dad, are you awake?" he heard the very subject of his thoughts outside the door.

"Yes, baby girl, you can come in" he said and a moment later his daughter came to lay beside him.

"Mommy's afraid you might not want the baby." she stated simply.

"Did she tell you that?" Derek asked surprised.

Addie shook her head.

"No. But why would it be so hard for her to tell you, then? So, don't you want it, daddy?" she asked.

Derek had to admit that he had a smart kid. Which meant lying was out of the question.

"I … I'm not sure, baby" he confessed to his fourteen year old.

"Is it because of me?" Derek' s eyes widened.

"You?"

"Because mommy almost died when I was born?" she asked in a small voice.

Derek sat up and looked at her.

"Who told you that?" he asked.

"I heard Aunt Lexie telling Tha … grandpa Thatcher at her wedding" she shrugged.

Derek sighed, then helped her sit up taking her hands in his.

"Listen to me, baby girl, your mommy did not die. Yes, it was a difficult pregnancy and she could have died. You both could have. But you didn't. And this baby, well we'll just have to make sure that your mommy has the best care she could get and they'll both be fine. Ok?" he gave her a smile and received another in return.

"Ok" Addie whispered and hugged him.

"I love you, daddy"

"I love you, too, baby"

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"So" Meredith started later that night "we need to talk ..."

"Do you want the baby?" Derek asked.

"I … um ... do you?" she asked back.

"Well, you were under a lot of stress back then. George's death, Izzie having surgery after surgery, Cristina's pregnancy, being a resident … And now … we're ok. No dieing, sick or pregnant friends, just you, me and our family and there's no reason why this baby shouldn't be fine ..." he said playing with a strand of her hair.

"You want the baby" she concluded smiling widely. "Me too" she whispered and leaned in for a kiss.

"One condition" he said when they finally broke away "You too will have the best doctor".

Meredith smiled.

"Well, why don't you call her? It's about time she meets her namesake" she told him.

"First thing in the morning" he said pulling her closer for another kiss.

A/N: Since it isn't a one shot anymore I was thinking I could write a little more about Addie. Like when she meets Addison or her relationship with Cristina's son or her younger cousins … Let me know if you're interested. Please review. Thank you!