Callie knocked on the door of Alex's house. It had been four days since she had seen Sofia and she was so excited to spend some time with her little girl. Between her normal workload and the time she and Owen had been spending on the Wounded Warriors project, Callie worried that she was letting her time with Sofia fall to the wayside. In order to make up for the missed quality time, she had cleared her calendar for the next two days so that she could do nothing but focus on her daughter.

She impatiently knocked on the door again. "Where the hell is Alex?" she wondered.

She looked at her watch and sighed. She was actually late picking Sofia up. She had had a surgery go over and that meant she couldn't leave on time. She mentally kicked herself, knowing that she should have taken the time to call. But that was a moot point now. She was there and it was starting to appear that no one was home.

Arizona and Callie had come up with this arrangement in order to make it possible to avoid each other. Sofia and work were their only common links. It became easy enough to avoid each other at work. They could check the surgery board so they would know where the other would be and they stayed in on call rooms closest to their departments so they didn't have any accidental run ins. Board meetings were the only time they really had to see each other and there were enough other people on the board that they could almost pretend they weren't even in the same room. Figuring out how to exchange Sofia without having to interact with each other had been a little harder. And that's where Alex came in.

He was hesitant to the idea at first. He didn't want to get in the middle. He didn't want to be an in-between and he certainly didn't want to become their personal messenger. However, Arizona had practically begged Alex to help them out. The second her and Callie were alone together, they began falling into old habits. She told him he had to help or she would never be able to move on. After enough guilt tripping, Alex finally agreed. He had his conditions though.

One, Arizona and Callie were not allowed to ask him about each other. This was about Sofia, not them. Two, the exchanges would take place on his schedule, not theirs. He didn't mind helping out, but he wasn't about to run all over Seattle like a chicken with his head cut off to make their lives easier. If they needed his help, he needed them to give a little too. The conditions were easy enough and they allowed Callie and Arizona to have the time apart from each other that they both needed. So the arrangement was made and surprisingly, it had been working like a charm. Any big issues concerning Sofia were passed on through Alex, allowing them to still communicate without having to actually interact with each other.

Today though, Callie was starting to get pissed off. She understood Alex's rule…exchanges were to happen on his schedule. But how could she just walk out of a surgery so that she could be there exactly on time? Had he really not been willing to wait an extra two hours?

Callie pulled out her phone and dialed Alex's number. After a few rings, she heard his voice on the other end.

"Go for Alex," he said.

"Alex, where the hell are you?" Callie said, not bothering with any pleasantries but getting right to the point.

"Callie, how nice of you to call," he said. "Well you see, I happen to have a job too and I had to be there at 5. I waited as long as I could, but Cal..I couldn't be late."

"I understand that Alex but couldn't you have just told me and brought Sofia to the hospital? I mean I was obviously being held over there."

"Ah..that's an excellent point. I probably could have. But Arizona is home so you can just get Sofia from her."

"What?" Callie said. "Alex…you know we can't…"

"Oh Callie c'mon," Alex scoffed. "It's been three months. You two can't avoid each other forever. If three months wasn't enough time, I don't know if any amount ever will be. If you want your kid, you'll have to go through her."

And with that Alex hung up the phone.

Callie looked at her cell, shaking her head in disbelief. Who did Alex think he was? He could be a good guy when he wanted to, but forcing Callie and Arizona to interact before they were ready…that was a dick move.

Callie looked at the door again. Alex had said Arizona was home. But Callie had knocked twice with no answer. So either Alex lied or Arizona was seriously not going to answer the door in order to avoid her.

Callie quickly dialed Arizona's number on her cell and held the phone to her ear. It rang a few times before going to voicemail.

Okay…was Arizona really not going to answer her phone? This was ridiculous. Callie raised her fist and knocked on the door for a third time.

"Arizona!" she yelled. "Alex told me you're home. Open the door!"

Nothing.

Callie held up her phone and was about to dial again when she heard the lock turn and the door slowly opened.

Arizona grabbed Alex's arm, pleading with him to stay.

"Alex, please. She'll be here any minute. I know it. Just…a few more minutes. That's all."

"Arizona, I don't have a few minutes," Alex said, grabbing his coat and keys and heading for the front door. "You guys have to get over this thing. I helped for a while but enough is enough. Get over it. Better yet, get over each other and learn how to raise your kid. Without me!" he yelled, walking out the door and slamming it behind him.

Arizona was at a loss for words. Alex had been so great for the past few months. Where in the hell had that come from? And what the hell was she going to do?

She wasn't ready to face Callie yet. She had grown and achieved so much in their time apart. As irrational as it seemed, Arizona feared seeing Callie would unravel it all.

She needed to find Jo. Jo could do the exchange and then everything would be okay.

"Jo..SOS.."Arizona typed, "Alex is at work and Callie is on her way to get Sofia. Where are you?"

No more than a minute later, Arizona got a response.

"About to scrub in on a surgery with Dr. Grey. Sorry." Jo replied.

Well crap. Arizona was stuck. She would have to do the exchange and see Callie. And talk to Callie. Alone. For the first time in three months. She felt like she might be sick.

She walked to Sofia's room and started gathering her stuff together. Sofia was napping in her bed, snuggling the purple bracelet Jo had given her a few months before. Arizona had tried to explain to the little girl that the bracelet was supposed to be worn as jewelry, not cuddled. But Sofia insisted that it was meant for both. So she wore it while she was up and about, but when naptime came she would gently take it off her wrist and snuggle it against her chest as she slept.

Arizona had just finished packing the last of Sofia's bags when she heard a knock at the door.

She froze. It was her. Callie was there. Just down the stairs. She couldn't do this.

Then there was another knock, a little louder than the one before. Maybe Callie would think no one was home and just come back later. Arizona knew that was crazy. Callie wouldn't just leave without Sofia…but she was grasping at straws. She did not want to answer the door and face Callie. She wasn't ready.

Her phone started ringing and her heart began pounding. What was she doing? Callie was probably becoming panicked outside. She needed to grow a pair and just let her in.

Then there was a third knock. "Arizona!" she heard. "Alex told me you're home. Open the door!"

Arizona gulped and tried her best to pull herself together. She was being so silly. Was she really trying to pretend that she wasn't home?

She walked down the stairs and closed her eyes. "Here we go," Arizona thought, as slowly turned the lock and opened the door.