I am one of those terrible people your MIL warned you about,, A true Disaholic, with a broadband connection,,LOL
Bumblebee,, The fact that you and your hubby ignore her, and stand up to her, must really irk her big time,,lol. Well Done. I love how you have maintained your sense of humor as well, and don't hold hubby to blame for his mother's obvious problems. My former husband's mother could have been Cruella's sister. I actually had a lapse in judgement one Halloween, and invited her over to enjoy it with us,, she critized everything from our elaborate decorations for the Holiday,, to the costumes that I had HANDMADE for my two girls. I left the house after getting fed up with hearing her moan about one thing after the other, and took the girls out trick or treating with my best friend who lived next door, and her kids. My hubby later caught up with us, and said he kicked his mother out of the house,,lol. I felt a bit bad for her at that point,, but he said not to,, that he'd had enough as well, and told her she could no longer come to the house, since there were so many 'problems' with how we do things. We later divorced, amicabbly, but I will always feel that his mother ruined many of the years we were married. She was something else.
Ironically, my new MIL must be the long lost third sister to Cruella,,,lol.
Please take note mothers of sons (and daughters if it applies),, if you want to get on with them and their wives/girlfriends as adults,, follow the golden rule. Do unto them as you would want your own MIL to do unto you.