Luckily my Mum is fantastic, as she works as a Teaching Assistant with ASD children. My Step-MIL is great, as she has alot of medical knowledge and knows alot about the system.
My MIL on the other hand is a pain, she wont accept F and acts like there is nothing wrong with him, just constantly speaks to him like hes a foriegner - Slow and loud! She thinks F's problems are all in my head - because I dont talk to him etc etc