AIBU to step in and tell my MIL how she makes OH feel?
I've been a long time lurker in the stately homes thread and I believe that my OH has a toxic mother. We've been together 10 years and in that time she's manipulated my OH into trying to keep things from me, borrowed OH money and then told me, believing it would cause arguments (it didn't) and when I paid the money back (I don't know why OH didn't just ask me), was a called from pillar to post for being ungrateful. She has used divide and conquer between us as a couple and OHs Dsis and BIL, told family that she paid for all of our wedding (she didn't) and has told others about (non existent) problems within our marriage, for example, that I'm a heavy drinker and it depresses OH to a point of suicide - none of it remotely true.
OH has tried to speak to her about this before, but is hugely gaslighted. FIL often doesn't get involved, but has recently started to find his voice and sticks up for MIL even when the truth is staring him in the face.
The rest of the family are aware of what she is doing and have agreed when I have spoken to them about it that my OH is often the bad guy in situations, but is told 'oh, just ignore etc'.
The thing is, I am at my wit's end. Nothing we/OH does is good enough, OH has recently been validated with feelings by other family members, but it seems that something has changed recently where they are suggesting OH puts thoughts and feelings to one side so as not to rock the boat (I think Xmas has something to do with this), but I'm worried that this will have an adverse effect on OH mental health.
I would really like to have the conversation with MIL as to what her actions/comments cause, but I think that may cause OH to be cut out and I'm not sure if that will help or hinder.
Sorry about the long post. I have tried to be brief with as much detail as I can so that I can get as many thoughts and opinions as possible.
Thanks