My DF (73) has been married to my SM for about 20 years. I wouldn't say it's been a particularly happy marriage in the main. They took on legal care of her grandchildren, which on top of her 4 adult children has been a lot for my DF to support. There's some resentment on both sides. She has always had a habit of publically belittling, contradicting and humiliating DF.
They moved to a more rural area about 10 years ago for a larger house and country lifestyle - more her choice than his.
DF was diagnosed with a degenerative disease about 7 or 8 years ago, which is worsening. Sadly, SM's emotional behaviour towards DF is just as bad if not worse - although she supports him fine physically and practically.
The mid-to-long term plan is that he will probably need to go into care. The consensus is that this would be closer to me, so I can visit him more easily - and his sister/nephews/nieces who also still live this way. He has recently been asking me how I plan to be involved in his care in later life, and expressed that he isn't very happy in the country and feels isolated/dependent (he no longer drives). I've said I'll support his care, but have no plan to move to the country so they'd need to move back this way (assuming DF and SM when I said that).
SM wants to stay where she is, as that's where her friends are and her daughter/grandkids are now near there too. I imagine she would visit him, but she doesn't like driving so I don't know how regularly that would be.
In terms of DF's will - he passes his estate to SM and when the trust period is up or she passes away, the estate passes down 50/50 between me and her children.
Is there something I should be doing/saying? I've been concerned for years that she's emotionally abusing him through the belittling/shutting down etc, but he has chosen to stay with her over the years (he's weak with her).
I'm so "inside" this situation that I'd really appreciate any outside thoughts. Is it still really a marriage if DF moves away from SM for the latter stages of his life?
I'd be glad to have him closer so I can visit him and take my kids to see him, but also can't help but feel resentful that he's only considering moving back when his health is failing.