My MIL has an eating disorder and controls everything she eats and monitors what those around her are eating .
I understand this is a illness, but she has no insight into it and is really rude with it.
She thinks fat people are disgusting and worthless. When my partner and I got together I was a size 8 and she treated me well, but due to ill health I'm now a 14/16. She let's it be known I'm worthless and can tell she is disgusted by me. She can't even look at me eat. My views have no value. I've been told she has looked at people in restaurants eating who are larger and loudly voiced her disgust so the person can hear. I really struggle to accept her behaviour.
My partner said she has invited us round for dinner tomorrow. I quite frankly don't want to go and be subjected to it.
Am I being unreasonable to avoid her or should I go and accept she has an illness.