My MIL were best of friends before DDay. We talked multiple times a day, emailed all the time, sent pictures to each other, birthday and holiday cards/gifts, we even paid for them to vacation at our home and elsewhere since they didn't have the means to leave their home city. When I say we were tight, I mean we were TIGHT!
Then DDay happened. My H called his mom and told him he had done some things on the internet and asked if he could stay there for a few nights. She called me to see if I was ok, and I set the record straight... he didn't do something on the internet, he cheated on me! She said she was so sorry and if I needed anything to just let her know.
For the next several weeks/months, she slowly started cutting off contact with ME! I never said anything to her about my pain, I never demonized her son to her, I never even talked to her about the infidelity. I have no idea why she felt the need to cut me out. Not only did she cut me out though, she also cut out our children. Suddenly they were the only grandkids not allowed to sleep over with Grams and Gramps.
Eventually my H started trying to talk to her about the issues. He tried to ask her many times why she was cutting me out, and she would always change the subject or say that I won't ever listen to her and fix it so it doesn't matter. I also tried to reach out to her through email (mostly so my words couldn't get twisted, and so H could see what I was saying before I sent it to let me know that it couldn't sound like I was picking a fight). She rebuffed each of my attempts and gave me the same responses she gave my H.
Eventually my H told her that if she isn't willing to fix things with me, then he doesn't want to have anything to do with her. My H recognizes that he is the one that made this mess, and it's not right for his Mom to be so upset with me over it. And if she isn't willing to work on fixing the relationship between her and I, then he will not sit back and let her continue to cut me out and hurt me and our children for no apparent reason.
It's now been about 3 years since we've talked to her. I've attempted a few times during that time to extend the olive branch and let her know I'm still willing to work on this, and she continues to reply that I'll never get "it" and so there's no reason to fix anything. I have no idea what "it" is that she's speaking of.
And, FWIW, my MIL was never involved or had any knowledge of any of the A's until DDay. So it's not like she had anything to feel guilty about either. If she HAD been involved, then there is a high probability I wouldn't even want to work on things with her either.
Just because someone is family by blood or marriage, does not mean that they are entitled to have you in their life. Being in someone's life is a gift, not a requirement. If she's not willing to work on things, then she doesn't deserve the gift of your presence. And your WH is totally wrong in thinking that she's not guilty of anything. Yes, it IS his fault for cheating, but his mother was an accomplice in that cheating. If he robbed a bank, she'd be doing time right along side of him if she drove the getaway car or staked out the bank.
DDay - Dec '07
Me - BS
Him - WS
Us - working on R - again
May 18, 2010 - I forgave him fully!
D-day 2 July 4, 2015, turns out he is a SAWH, status, working harder than before
May 22, 2019 -slip/relapse. He forgot he has to work forever