A/N this is my first attempt at a crossover fic. Please be kind. I don't own Law & Order:SVU or Rizzoli & Isles. I'm just a forever fan of both shows. Thank you and enjoy.

Chapter 1

Christmas Eve/ December 24

3:35pm

"Well. That's it for me boys." said Olivia Benson as she piled the last of her paperwork into her completed bin. "See you next year." She smiled at the thought of an entire week off without fear of her pager or cell ringing to call her to a scene.

"You leavin' already, baby girl?" Fin asked as he sat back in his chair.

"Yep. I'm finished and I'm outta here." Olivia said, not even trying to hide her joy of going on vacation.

"Don't you want to stick around here for a while and help your fellow detectives out?" asked Munch with an attempt at a pathetic look on his face.

"Sorry, Munchie. I'm officially on vacation, so other than to call me and wish me a Merry Christmas tomorrow...I mean no offense by this...don't talk to me until 8am on January 3." Olivia said with a cheerful twinkle in her eye. "As soon as I tell the Cap and Elliot bye, I'm outta here."

Olivia turned and strode toward Captain Cragan's office, knocked then entered.

Fin and Munch just looked at each other. Olivia had never refused to help them with paperwork before.

"What do you think was up with that?" Munch said to Fin.

"I'm not sure. She must be really anxious to start vaca. She has had a rough couple of months with all those rape/murder cases." Fin said then after a moment added, "She must have some big plans. I've never seen her so anxious to get out of here. When was the last time she took any time off?"

Munch shook his head and gave a 'beats me' hand gesture then returned to his mound of paperwork.

"Olivia." Captain Cragan said with a smile as he gestured for her to sit down. "What's going on? Are you getting your paperwork finished up so you can take off?"

"Actually Cap, that's what I came to see you about. Would it be alright if I took off now? I'm finished with everything and am wanting to head home." Olivia said.

"Sure, sure. That would be fine. You have had a few rough cases lately and don't take offense to this Liv, but you've been looking a bit peaked lately. I think leaving now would be just what the doctor ordered. Go home and rest up then start your vacation."

"Thanks Cap." Olivia said and rose from the chair to give him a hug.

Seeing what she was going to do, Cragan got up too and they met somewhere in the middle of his desk for a quick hug.

"Merry Christmas, Don." Olivia said as she released him from her embrace.

"Merry Christmas to you too, Liv." Cragan said as he planted a fatherly kiss on her forehead. "Oh, I got you something. I almost forgot to give it to you." He walked back to his desk and pulled a wrapped box from his top drawer and handed it to her.

Olivia blushed and murmured "Thanks. I have something for you too." She reached into the sleeve of her oversized sweater and pulled a wrapped gift out and gave it to the man she had always considered to be her father in every way but by genetics.

"Thank you." Cragan said, surprised. "You didn't need to..."

"Neither did you." Olivia said, cutting him off. "Do you want me to open it now or wait until morning and call you?"

"I think tomorrow with a call from my favorite girl would be nice." Cragan said with a wink. He also considered her to be the daughter he never had and loved her dearly.

"Okay then, tomorrow it is." She said.

They gave each other one last hug and she went back to the bullpen to find Elliot, Fin, and Munch before officially leaving for the day.

"Liv. Olivia!" Elliot called as he made his way down the stairs from the cribs. "Fin and Munch said you were heading out."

"That's right, El. I just cleared it with Cragan and was coming to find you before I left." Olivia said as she crossed to her desk and opened the top drawer. She pulled out a wrapped present, held it out to him and said "Merry Christmas, El."

"Thanks Liv but you didn't have to."

"I know I didn't have to. I wanted to." She flashed him that signature Benson smile that made him go weak in the knees.

He took the gift then opened his top drawer, extracted a wrapped gift as well and handed it to her as he said "Merry Christmas to you too, Liv."

"Thank you but you didn't have to either. I know you have a lot of expense this time of year with the kids and all." Olivia said as she accepted the offered gift.

"I've got it covered. Ever since Kathy and I divorced, I've had money taken out of my check every pay and put into a Christmas fund so I have money to buy gifts. It's no bother." He flashed her that brilliant Stabler smile that made her insides turn to goo.

"Thanks, El, I really appreciate it. If you don't mind, I'll open it tomorrow morning when I open my other gifts." She said with a sad little smile.

Elliot knew Olivia had no family, other than her family at the precinct, and instantly felt a deep sorrow for his best friend and long-time partner. He returned the smile then reached out and pulled her into a bone-crushing hug.

Olivia let out a squeak of surprise at the intense gesture and returned the hug before whispering (because that's all the air she could expel) "El, you're crushing my ribs."

Elliot immediately blinked, blushed, and loosened his grip on his partner but didn't completely release her. "Sorry, Liv. I...um...I guess I just wanted to let you know how loved and appreciated you are around here."

Olivia, completely taken aback by that proclamation, felt her eyes instantly fill with tears and cursed herself for reacting this way. "Thanks." she said thickly before releasing her grip on the back of his shirt.

Elliot released her as well but kept a warm and friendly hand on her shoulder until he was sure she wasn't going to completely break down. He knew this time of the year was hard on her and he didn't want to add to her misery.

She composed herself and smiled up at him as she said, "Thanks again. I need to find Fin and Munch and give them their gifts before I take off. Merry Christmas, El. I'll call you tomorrow, if that's alright."

"That would be fine Liv and Merry Christmas to you also." He hesitated then added, "Would you like to attend midnight mass with me?"

Olivia thought for a moment before saying, "Thanks for the invite but I think I'm just going to spend a quiet evening at home."

He watched her walk off and wished he could do more to ease her pain.

Olivia found Fin and Munch, exchanged gifts, greetings, and hugs with them before heading to the morgue to find Melinda and do the same with her then to the D.A.'s office to find Casey. Finally, at 4:15, she headed out the door and made one last stop at the grocery store before heading home.

At 5:00pm she made it home, dropped her purse, coat, and shoes at the door and went to put the groceries away. She trudged back to her bedroom, stripped off her work clothes, and put on her biggest, baggiest, and most comfortable sweats before grabbing the portable phone and plopping down on her couch. She laid there for a few moments just enjoying the quiet before a small twinge of nausea hit her.

"Not now!" she moaned as she leapt from the couch an ran to the bathroom before emptying the contents of her stomach.

She sat on the edge of the tub for a but to make sure there wouldn't be a repeat performance before rinsing out her mouth and washing her face with cool water.

She returned to the couch and rubbed the small, newly forming bump below her navel and said "Merry Christmas, little one. Next year will be wonderful, having you with me." She smiled and rubbed it again before grabbing the phone.

Olivia dialed the phone and on the third ring, a familiar husky voice said "Hello."

"Jane. It's Olivia Benson. How are you."

"Liv! So great to hear from you. How are you doing?"

"I'm well. I just wanted to call and wish you and Maura a Merry Christmas and to thank you for the lovely gift."

Jane chuckled then said "Nothing says Merry Christmas like a fruit and chocolate basket."

Olivia laughed too and said "I guess great minds think alike. Did you get the one I sent you?"

"Yes. We did. Thank you. Maura is all about the fruit and I made sure the chocolate was put to good use."

There was a moment of silence before Olivia broke it.

"So...what plans do you and Maura have, this being your first Christmas as a married couple?"

"Oh, you know, the same old-same old. My family will be invading us for an after-church snack then will be invading us again tomorrow for an official Christmas dinner. What about you? Any plans?"

"I'm just going to spend a quiet evening at home then lounge around the apartment tomorrow and watch Christmas movies and eat all the popcorn I can choke down." Olivia tried to produce a convincing laugh but failed miserably.

Jane knew her friend well enough to know that Olivia had a rough time during the holidays and wished she could do something about it when a brilliant idea struck her. "Liv. I just had a brilliant idea."

"Liv? Is that Olivia on the phone, Jane?" Olivia heard Maura say.

"Yeah honey, it is."

"Why didn't you tell me before this?"

Olivia heard an extension being picked up then was greeted by a cheerful "Olivia! How are you? I was just saying to Jane how I've missed seeing you. I know we talk on the phone but we haven't seen you since our wedding and that was in February."

"Maur." Jane said. "Come up for air. I just had a brilliant idea and I was going to tell Liv before you jumped on the line."

"Jane." Maura retorted. "It is physically impossible for me to jump on the line. You know that."

A chuckling on the line indicated that Olivia was enjoying the couples bantering before she said, "What was your brilliant idea, Jane. I'm dying to hear."

"I was thinking that you could catch the train in Manhattan and come up here to Boston and spend Christmas with us. When do you have to be back at work?"

"That's a brilliant idea, Jane." said Maura. "Olivia, what do you think?" (Maura insisted on calling Olivia by her given name)

Olivia hesitated, made a small noise that indicated she was thinking, then said "That sounds like a wonderful idea but I don't want to crash your first Christmas."

"You won't be crashing anything." Jane said. "Maura and I have been together for years now. Besides, you are invited. My family just invades. When do you have to be back at the precinct?"

"Actually, I don't have to be back until January 3rd. I took the whole week off." Olivia said.

"Then that settles it. You can spend the week with us." said Maura.

Olivia and Jane could hear a clicking noise over the phone.

"Maura, what are you up to?" asked Jane.

"I am booking Olivia on the next train to Boston right now."

They heard a final keystroke and knew Maura had just completed the transaction.

"Sounds like it's all settled, Liv. When does she leave, Maur?"

"In one hour. 6:30pm to be exact, as long as the train is running on schedule." Maura said then added, "That will give you time to pack and arrive at the station, won't it, Olivia?"

Olivia had yet to speak. She desperately wanted to go to Jane and Maura's but she was worried because of her morning that lasted into all day sickness. She had yet to tell anyone about her pregnancy. Bewitching hour was upon her.

"Liv?"

"Olivia?"

She heard Jane and Maura say, concern in each of their voices.

"I'm here. Yes, that would be sufficient time for me to get ready. I really want to come."

"But...?" Jane said.

"But, I'm afraid the train ride would be a bit nauseating for me."

"Nauseating?" Maura questioned as she switched from friend to doctor mode

"Yes. Nauseating. You see, I'm pregnant and I'm still suffering from morning sickness that actually lasts the entire day. Whoever named it morning sickness never experienced it."

"Oh my god!" exclaimed Jane and Maura at the same time.

"Liv. Congratulations. That's fantastic news." said Jane.

"Thanks." said Olivia. "You two are the first ones I've told. It feels good to share the news with someone."

"Olivia, we have something to tell you as well." said Maura with a giggle in her voice. "We're pregnant as well!"

"Oh my god, guys! Congratulations. Which one of you is the lucky one?"

"Both of us!" exclaimed Maura. "Jane and I are both pregnant."

"Wow." was all Olivia could get out as she tried to wrap her head around the news.

"Now you really have to come here." said Jane.

"Alright but what if I get nauseated?" asked Olivia.

"Take a sleeve of saltines with you and a couple bottles of water. That should help. Do you have any ginger chews?" said Maura.

"Ginger chews?" asked Olivia. "What are they?"

"They are wonderful." said Maura. "They calm your stomach almost instantly. You really need to get some but I'm not sure you'll be able to get any on Christmas Eve." Maura hesitated then said, "The saltines should suffice. It's onl hour trip. We'll have some with us when we pick you up at the train station."

Jane and Maura heard what they thought was sobbing on the other end of the line.

"Liv? Are you alright?" Jane asked.

"Yes." Olivia said with an embarrassed laugh. "Darn hormones. They kick in at the worst time. I'm just so overwhelmed at your generosity and friendship. I will be paying you back for the train ticket. I better be going so I can get packed and to Penn Station."

"Oh right." said Jane. "We'll see you in about 5 hours."

They said their good-byes and Olivia hustled around her apartment packing what she thought she would need for her week in Boston. Just for good measure, she grabbed two sleeves of crackers, four bottles of water and her only bottle of ginger-ale before heading out the door to her much needed vacation with friends she was longing to see.

"Ginger-ale, ginger chews...hopefully it will have the same effect and you won't mind the ride to Boston too much." Olivia said to her barely-there baby bump.

Her stomach flopped in response and she ran to the bathroom to vomit, yet again, before heading out the door.