Things not going well with her family and her feeling strange doesn’t mean she can’t be walking and talking with her dad. They were maybe discussing their relationship or who knows. It doesn’t mean she is lying. You can’t make such assumptions. You made similar assumptions about other friend, the one you had art business together. You can’t just assume things

You seem unusually preoccupied with this lady. It’s pointless trying to analyze why she is walking with her dad. Just let it go. She bullied you as a kid. You can’t fix that but let’s try to work on it in therapy and move on. Analyzing her current life is not serving any purpose