Well that's sad - and it also goes to the earlier discussion on this thread (from back in '12) about why people would subject themselves that kind of publicity and online trash talk, especially when the whole thing is about how they are now in quite a lot of money.
But hard to say whether that actually mattered here, the history with this guy was already there. Perhaps her family's coming into wealth made him even more psychotic about her and that may have had nothing to do with the show.