This is a tricky one. My lovely MIL died 8 years ago. DH and SIL were late 20s then. FIL met someone else within a year and they married 5 years ago. None of us like her. I am normally really open to new people, made an effort to make her feel part of the family but although she made some effort to begin with, she's since stopped and shows so interest in any of FILs family - and never visits when he does etc. That was fine, we just let that play out and accepted that she is quite a selfish person. She and FIL live quite separate lives, have separate homes etc. she is 15 years younger but has him doing loads of errands and jobs for her. More recently she has started to be openly really critical of FIL. He is a lovely, gentle and kind man. She is so unkind about him, constantly puts him down and belittles him. He's 84. She's constantly telling him he has dementia- he doesn't show any signs- and she will be very open criticising him in front of DH and SIL. We don't think FIL is happy but he is private. He was so happily married before so we just don't know what to say or how to broach this. Frankly his new wife is just cruel and cold. WWYD?