Sophia Quinn
Sophia Quinn is the daughter of Robert and Jill Quinn and the paternal younger half-sister of Callie Adams Foster. She first appeared in Things Unknown.
Immediately after meeting Callie, Sophia grows attached to her and begins to express to her parents how she wants them to adopt Callie so they can be a family. She takes action to make this dream a reality, angering Callie, and their subsequent fight sheds light on Sophia's suicidal feelings. In later episodes, Sophia is diagnosed with a personality disorder and entered into a mental health program, where she begins making positive progress.
Sophia is portrayed by Bailee Madison.read more