Hi everyone. MIL is bipolar/BPD and has cycles of unstable behavior. Things have gotten worse in the past few years and came to a head last summer when FIL slapped MIL, she called the cops and had him arrested. They’re both in their 70s, married 50+ years and no prior DV. There was talk of divorce but they chose to “start over” and they are miserable. She has painted him black and things are bad again this summer. I’m worried that they will escalate again.
She is now claiming he shows signs of dementia and is demanding he go see a neurologist for an eval. The thing is; she says the same thing each time she has a cycle. He has had 3 evals in the past 5 years with no indication of dementia. This time HE sent out a mass email to family/neighbors stating he is showing signs of dementia and listing all of the points that MIL makes. (Like losing a set of keys

) It is like he is a hostage with Stockholm Syndrome!
Obviously no one can force them to see a psychiatrist/therapist, but is there anything we can do to assist with mental health help? They’ve alienated most family and don’t have much support.They’re together in their home almost 24 hrs a day. It’s like watching a slow motion wreck. Anytime my husband or his sibling brings up her behavior she says “children shouldn’t “diagnose” their parents, they should love them unconditionally”…and FIL won’t say a word.
How do we help loved ones who don’t want help?