Alyson Hannigan - Pretty in Blue
How old is the brother? It seems like quite the span of time between the daughters, it's hard to imagine how the brother is in a position to speak for both of them. Was he in the house with the first daughter, 20 years ago, or was he in the house with this daughter now? It is a terrible thing to simply assume that because you don't see abuse when you visit, that it is not happening.

Also - is his mother the "Chris" he refers to? I know some people refer to their parents by their first names, but when you're already questioning a woman's maternal instinct, I must say, that doesn't instill confidence....