Was always a little nervous around Pie since she was older. She and Pie sometimes get into physical fights because Pie likes hugs, Callie doesn't.

Her and Ziva were always fighting as kids. They were closer in age, Ziva wanted to hang out all the time and play but Callie wasn't having it.

Midnight is Callie's twin. The two will constantly cuddle, midnight is the only one who Callie will let hug her.