I do believe CA knows who the bio-dad is. She was in high school when she got pregnant and even though some high schoolers sleep around, you know who you slept with and when. Have you seen those court tv shows where a couple comes in to determine who's the daddy? The girl always says it's the defendant and when it's not, she's like 'yeah, I'm pretty sure I know who's the real daddy." I may be naive, but how can a girl not know?