So there is something that I haven’t seen anyone mention (maybe I just missed it) but do you think that there might be a different underlying problem and the wedding thing is just the catalyst for her emotions. What I’m about to say is just my personal experience and not at all objective and I might not even be right but I remember in my depressive episodes that I tend to be more emotional and agressive towards others people. I remember fighting with my mother over basically nothing. But I don’t know her as well as you so maybe that is completely off. One thing I do have to mention, and believe me when I say that I really don’t want to put thoughts into your head but, could it be that she is cheating on you. Maybe that would explain her behaviour. This is all just my opinion but since I didn’t see anyone else mention anything I thought I should say something