I heard she was a devout Christian and was a part of a small group following a guy that thought women were to blame for the trouble in the world and that you're (as a woman) supposed to have as many children as possible. But I heard different things like Andrea Yates followed this but her husband didn't or that her husband believed in this and pressured her into it....or her family (parents, brothers, sisters) believed in this and led her to it......regardless though, you're right gringojj, it's probably not the total cause but it didn't help any.