"How did she do overnight?" Addison asks softly, standing over the baby's incubator early the next morning.

Reese, her nurse exhales slowly. "It was a tough night. She had multiple apnea spells, heart rate was bradycardic for a bit, but, she's still here. She made it through her first night, that's something, right?"

Addison nods quietly. "it is certainly something." she agrees. "alright. I'm off to rounds, but page me, immediately if anything changes."

"Addison?" Mark's voice snags her attention as she is tossing her NICU gown in the trash can.

"Hey."

"How is she this morning?" Mark rubs his eyes, any new news?"

Addison shakes her head. Right now, she's stable, but she had a few apnea spells last night, and some bradycardia that we're keeping an eye on. This is all normal activity in a micro preemie Mark, this is to be expected.

Mark sighs and runs his hands through his hair. "Alright. Okay, thanks for the update. He lightly kisses her cheek. "How's Ella?"

Addison smiles a little. "Ella's good. She was upset when I told her you wouldn't be picking her up today but, she said she loves you, and she'll see you soon."

"Did you tell her, about-"

"No."

Mark nods. "Probably best to wait, right?

"Right."

! She's crashing! Reese's voice is frantic as Addison and Mark both race back over to the incubator.

Addison works quickly to stabilize the baby's slowing heart rate. "Damnit." she mutters.

"What is it, is it another apnea spell?"

"Mark. Outside. Now." Addison orders.

Mark shakes his head. "No."

"Mark I mean it, if you want me to save your kid, I need you to not be standing over me" she insists.

She looks at Reese as she pulls her stethoscope out of her ears. "She's developed a PDA. I was really afraid of this."

"She's too little for surgery right now." Arizona murmurs quietly.

"Right." Addison nods. "right now, your little girl is stable. But, if the PDA gets worse, I'm afraid there's only so much I can do. She needs to have more strength before I'm comfortable opening her chest."

Arizona nods. "So we should prepare ourselves then, right?" She looks at Mark, who is wiping tears away.

Addison swallows hard. "I wish there was more I could do right now. If there was anything else to do, you know I'd do it."

"Addie. Stop." Arizona grips her hand. "You're the best there is. And if you're telling us that at this point there's nothing we can do, I believe that."

"I don't." Mark says.

"Mark." Addison shakes her head.

"No. you can't just... give up on her. How dare you!" Mark angrily storms away.

Addison leans her head against the NICU door. "He thinks I'm giving up." She shakes her head. "This is my daughter's half sister Arizona. Does he think I want her to die? Does he think I get any kind of... anything by having to tell my 6 year old that she's not going to be a big sister?"

"I know, Addison, I don't think you're giving up on our little girl." Arizona wipes her eyes. "And neither will Callie."

"we need to tell her."

Arizona glances back towards the baby. "We named her,late last night. Mark, and Callie and I." She finally says. Addison can feel the pain in her voice, and understands the hesitation that comes along with the sentence. Naming her, and then losing her, after beginning to give her a real sense of self was terrifying.

"Oh?" Addison smiles. "What did you guys decide?"

Arizona takes a deep breath. "Sofia."

"Sofia." Addison breathes. "That's beautiful."

"Sofia Robbin Sloan Torres." Arizona is now smiling proudly, while wiping tears away. She looks away from Addison. "I'm sorry." she whispers.

"Arizona, it's okay."

"I just don't want to lose her."

"I know." Addison hugs her tightly. "None of us do."