Dee,
After reading your last post, it appears that you might as well give up on your MIL also. Whatever she is getting from the situation must be important to her and unless she is specifically hurting you or someone you love, maybe you should just accept it as a part of her personality and move on.

Loneliness may not be the problem if she has intimacy with a partner and maybe she is simply making the choice to enable her daughter.

People do what they do.

smile