Arizona and Derek rushed Sofia into surgery just minutes later. Even though Arizona had just said that the baby was too fragile for surgery, they didn't have much choice. If they did the surgery, they might lose her. If they didn't do the surgery, they would lose her for sure and she would suffer as well.

"Are you okay to do this?" Derek asked just before they began.

"Yeah," she said. "It's my job."

"It's also your girlfriend's baby," he replied.

"And your best friend's," she said. "Nobody's questioning your abilities, Dr. Shepherd."

"Fine," he agreed. "Let's just do this," he said as they began.

"Can we do this?" she asked.

"God, I hope so," he told her, taking a deep breath.

"Dr. Shepherd, did you need -?" Lexie asked when she came into the OR.

She was on her brother-in-law's service that day, and when she heard that he had rushed off into a surgery, she had been determined to scrub in before he gave another resident the opportunity. Of course, she didn't realize who he was operating on.

"Scrub in, Dr. Grey," he nodded.

"Is that Sofia?"

"Can you do this?" he asked her.

She nodded. "Yes, I…I can."

"We don't need the quivering, Dr. Grey," Arizona said. "Pull it together before you come assist."

"I'm okay," she said. "It's just…"

"Believe me, I know," she told her.

"Right."

"So many people who care about you are here, Sofia," Derek said. "It's gonna be okay."

Derek wasn't sure what he believed when it came to what affected a patient's outcome. He had been very negative and had positive outcomes, and he had been very positive and had negative outcomes. However, he decided that it was worth the effort. After all, the little one on his table this time was basically one of his nieces. He would do anything possible to try and achieve the best result he could.

"It is," Arizona agreed.

Dr. Stark came in. "Dr. Rob –"

"I'm not her mom," she said.

"You're with her mom."

"Which is a relationship that, even if we took it further, our state would refuse to recognize as a real marriage. Technically, I have every right to be here. Sir, I know you're my boss, but this little girl needs me."

"Dr. Shepherd, please inform Dr. Robbins that –"

Derek may have logically agreed with Dr. Stark. Maybe it wasn't the smartest move to have Arizona operating on Sofia. Yet, they had already started and Arizona was doing exactly what she needed to with perfect accuracy. He didn't know how she was keeping her cool, but she was.

"Dr. Stark, Dr. Robbins is fine," he said. "Can you go give Dr. Sloan and Dr. Torres an update?"

"I'm not an intern."

"Then we're all set here, thanks," he replied.

"Thank you," Arizona told Derek when Dr. Stark left.

"Nobody should ever mess with a determined mom," Derek smiled through his mask.

"I'm –"

"Believe what you want, but you're becoming a mom."

"I hope so," she told him. "You have no idea how badly I hope so."

"Did you know Meredith and I are adopting?" he asked.

"You are?"

"You are?" Lexie, who had just come back from scrubbing in, asked. "How did I not know about this?"

"Well, we're trying," he said. "From Africa. When you came back and had all those stories of all those kids, we realized that that was how we wanted to become parents. We've tried for a biological kid and that didn't work out. So adoption's the next step."

"Congratulations," Arizona said.

"Thanks," he said. "Anyways, one of the first questions on the first questionnaire we had to fill out just to see if adoption was right for us, it was about whether or not we understand that the bond might not be instant," he told her as they worked. "But that it's more likely to build over time."

"I know that," she told him. "But with Sofia, do we have the time?"

"Well, we're repairing this bleed," he said. "That's something."

"Yeah," Arizona said, surprised at how well it was going.

"And I think you'd better sit the next one out," he suggested. "Right now, in the middle of surgery, that wasn't the time to step back. But mom's don't do this. So if you wanna feel like a mom, let Stark be the doctor from now on."

"I don't like people telling me what to do, Dr. Shepherd. Especially when it's about Dr. Stark."

"But you know I'm right."

"Unfortunately."

"And Meredith didn't want to tell too many people," he explained to Lexie. "Anybody really. Which means only Yang knows. Adoption doesn't always work out and she didn't want to get everybody all excited."

"Well, now I'm all excited," she said. "So much for that."

"You're gonna have a friend, Sofia," Arizona said. "A cousin, I guess. So get all better so you two can play, okay?"

"Why is it taking so long?" Callie asked. "It shouldn't take this long."

"They're just being –" Mark began.

"Yang!" Callie called out when she saw Cristina walking by.

"You okay?" Cristina asked, coming into the room.

"Sofia's in OR three," she said. "Can you go get an update?"

"What happened?"

"Her brain bleed got worse and she had a seizure," Mark said.

"Oh," Cristina said. "I was thinking maybe they went in for her PDA."

"Not everything's cardio," Callie said. "Now go be a half decent Godmother and go get us an update."

"Half decent?" she asked. "I'm fabulous."

"Are you ever going to babysit?"

"Depends how much she wants to hear about cardio gods."

"Half decent," Callie said. "See?"

"But I will go get you that update," she promised.

"That won't be necessary," Derek said as he and Arizona walked into the room after being in the OR with Sofia for a few long hours.

"How is she?" Mark asked.

"That's the toughest kid I've ever seen," he said. "Didn't even give us any problems."

"Good."

"And Lexie's with her," Arizona said. "But I think Daddy should go, too. We need to talk."

"Right now?" Callie asked.

"Good talk," she said.

"Good, huh?" she smiled.

"It's gonna take time," she said. "But I'm trying here. To build something. So, yes. We need a good talk."

"Thank you."

"I'll be back later," Mark told them as he left.

"Tell her we love her."

"She knows," he smiled. "But I will."