During a time when orthopedic surgeon Callie Torres and pediatric surgeon Arizona Robbins had broken up, Callie had sex with Mark Sloan, the plastic surgeon at their hospital, Seattle Grace Hospital. After that night, Callie ended up pregnant.

Callie and Arizona broke up because Arizona had been offered a job in Africa to treat children, Callie would have been willing to go with her even if she hated the idea, but at the last minute, even though they were already at the airport Arizona told Callie that she would go alone, and right there in that airport they broke up. Callie was sad but also angry. In reality Mark just wanted to console her, but Callie wanted to have sex for consolation, but she asked for sex, and Mark, a first-class womanizer, accepted. (Callie was living at Mark's house at the time because she had rented his apartment, thinking of going to Africa with Arizona)

Arizona eventually came back and Callie was angry with her, but Arizona tried to make amends, but Callie was always distant, and in a moment when they were alone in the elevator she told her: she was pregnant with Mark. Arizona was annoyed at first, but later she accepted it, and even became friends with Mark, they got back together and took back their old apartment (which is the one in front of Mark's), and they were very happy, Mark too.

In the end that little girl belonged to all three of them, to Mark and Arizona and Callie, but above all it belonged to Arizona and Callie, they were the mothers, Mark was almost a donor... even if they didn't see it that way, since Mark also loved that little girl

The little girl is in a sort of playroom in the hospital, where there are people who watch over the children (like babysitters) who obviously watch over them, and there she can play and be with other children. They always go to visit her and see her whenever they want during their breaks from work

[quick technical stuff! your name: how old/months are you: ]