Welcome to the club! I could tell you innumerable stories about how my MIL has tried to interfere in my and my husband's marriage and lives.
Definitely check out motherinlawstories.com and especially the forum there. That site has helped me through many a rough patch... some of the MILs I've read about there make my MIL look like Mother Teresa.
You are both adults. You get to choose where you want to live. If it happens not to be near her, too bad for her.
Good luck.
