My MIL said loudly to my SIL, thought she was having her boob off, look at her its there, this being about a week after I had a radical single mastectomy, my chest area has collapsed.
At the beginning of my relationship with DH, she used to sulk and cry on the phone to her DS's if she wasn't getting enough attention so that they would go round to see her. I saw straight through her and had it out with her.
Before I met DH, she picked a wallpaper, colour etc, FIL spent 1 week prepping and decorating, she came back from a break and said it was an awful wallpaper and she hated it and blamed him, she didn't speak to him for 3 months.
She is not a nice person and thick as shit, she once told me biscuits do not have sugar in them, actually said to her as you taking the piss?!! She wasn't.
I tolerate her as my DC's don't have any other GP's but keep her at arms length now from us and only see her when its convenient for us, she knows this and she hates it, I love that.
My DH admitted a few months ago, he doesn't really like her either.