Even though our wedding is a long way away, I have a pretty serious concern that is probably going to fester and make me worry through the whole planning process and I could really use some counsel/chilling out. My fiancee has a crazy ex. "Yeah, yeah," you think. "Everyone has one of those. Just don't invite her and top stressing, you whiner." Oh no. This girl is unstable. She has broken into his house on more than one occasion. One of those incidents involved some, ahem, very personal items, going missing. She has been in his bank account. She has shown up at ungodly hours of the night, screaming and crying. They had been broken up for a year before we even met, and always been a little wacky (he says) but things got really bad when we started dating and have gotten even worse now that we're engaged. So my concern is probably pretty clear: what if she shows up at the wedding? I mean, of course she's not invited, but I can't imagine it would be all that hard to find out the time/date/place of the wedding through mututal friends or unsavory methods. Should I just plan for her insanity to somehow encroach on our day? How do I even plan for whatever she might do?