the key witness against her, bill's mistress, bonnie contreras. es and her daughter, if anyone should be blamed for what happened, it was bonnie. >> she has a lot of responsibility or full responsibility in causing this. she ruined a family. >> reporter: the way the hall family tells it, bonnie was a golddigger, a stalker and a liar who had been manipulating and threatening bill for years. frances said that after she learned about the affair, she learned the truth about bonnie from bill himself. >> he laid it all out. he said, i'm going to tell you everything, vieja. >> reporter: the family insists bonnie told frances about the affair because she was angry over, of all things, a manicure. >> she was upset because my father wouldn't give her $100 to get her nails done. >> reporter: they said bill told them that bonnie had been stalking their whole family on facebook. >> she had created a fake account with a fake profile picture and friend requested the entire family. everyone accepted. my mom had her, i had her. aunts, uncles, cousins. >> reporter: