There's not a one of us who wouldn't have believed this woman. It just made sense given the facts, the history of everyone (as you knew it). I'm so glad your daughter is innocent in this regard.
Let's hope she calls you soon to fill you in on what all is going on in her life. You may not want to or be able to help her, but just knowing can be a huge relief. And, who knows, she may even listen and take some advice. Stranger things have happened.