I'll bet if you really look back...if you really think about it, you'll see things you turned a blind eye to. I was reading a post from someone yesterday (don't recall who, sorry), and it laid out a series of events that he/she chose to ignore. As I read it, events started playing out in my own mind. Times I probably should have taken a harder look at the way my life was going, but I chose to ignore those events.
Your wife cut the crotch out of someone else's pants. Does that sound like a stable person? You knew she did evil things, but you chose to ignore it.