I'm sorry she's hurting her relationship with your family too. She WILL regret it. My husband's family openly hates me now and I'm unwelcome among them. If this happens, try very hard (though you'd rather not) to tell your family it can't be this way. When she does finally return to you, she NEEDS to be reinstated as a member of the family (over time mind you), not treated badly. Believe me, it doesn't help your marriage if she thinks your family gossips about or despises her.
DO NOT give up hope! I actually asked my husband to sign divorce papers at one point in our disaster. Surely he must've thought me truly gone. But even then I KNEW deep down that my affair was the unreality and I would regret the divorce...I never filed. That was still about six months before I ended it with the OM, all the while telling my husband how happy I was and planning my "new life".
She's living a lie...and someday she'll admit it.
The grass may be greener, but then again, it may also be astroturf. ~Amy C Brown