What really frosted me was this Anti-Trumper started to tell me that she *knew* Trump for 20 years, as she is so much older than me. And she *knew* him to be a self-centered man. I think if I had the OPPORTUNITY to ask her how exactly did she KNOW him for 20 years, I would have uncovered a bit of a fib. Like your SIL, this is a lovely woman, but a die-hard Democrat originally from San Francisco. Listens to all the BS from the O-Press.
She probably only knows Trump like we all know Trump read about him for years, seen him in the news and on the Apprentice.
There was so much I wanted to say to my SIL but knew it would not end well and with family one has to be careful.
If she was just a casual friend I would have let it fly.