Been there done that...have a sister who is the same way. Mailed back presents from dad to the grandkids, told mom she couldn’t see the grandkids because she was going to vote for Trump.
Verbally abused mom who was in hospital and dying of cancer.....never reconciled with dad who she was estranged from already....
Both of our parents died within last year and she didn’t show up to the family graveside service for mom and when dad was fighting for his life in hospitals didn’t fly out and reconcile or day goodbye.
Leftism is definitely a dogma and a religion for some.
liberalism is a mental disorder and can also be exacerbated by other mental problems