Are you happy in your life with her? Personally, I would run for the hills. That sounds like a nightmare. I guess you should ask yourself what you want your life to look like in the next few years, and ask yourself if the person your wife has become can be a part of that picture, realistically. I don't advocate leaving someone due to mental illness, but one of the few times divorce is recommended is when there is drug abuse involved.
M: 43 H: 39 D: 14 Married 15 Together 16 BD: 6/2014 S: 8/2014 OW revealed 10/2014 Instigated dissolution 12/2014, in progress So over it!