5. "I'm very sorry to hear about this..." In response to In response to 0
It's like they say, when you marry you marry the whole damn family!!! I have been married twice and I know that this can be a very serious problem that could eventually break up your relationship with you and your wife.
I feel that your wife is the one that has to straighten out her own mother. If your wife doesn't, there is not a lot that you can do but make yourself look bad in your new families eyes.
I have been there, done that and I hope that everything works out alright for you and your wife !!!