DH and I made the mistake move to be closer to his parents 3 years ago. FIL is fine, very quiet and reserved, but DH's Mum is your traditional Mumsnet MIL.
Since moving closer, DH and I have been very much at her beck and call - which at first I was more than happy to help (we moved closer to be more helpful and see each other more) however it slowly grew into taking the piss. She frequently invites herself around during the week when DH is at work (I work from home) and will actually let herself in with the spare key, often giving me the fright of my life when I come downstairs and find her rifling through the kitchen cupboards. Despite being able to drive and having a car, she will ask me to drive her to the supermarket/shops/cinema etc - whilst I'm at work.
I could go on but hopefully you get the idea! (don't want to drip feed).
So here's the problem;
She's a very large lady, clinically obese, so much so that it is causing her significant strain on her knees and ankles.
She claims that her weight is due to a medical problem however having been to the doctors with her on several occasions, I've been present when the GP has outright said (after blood tests etc) that there is no underlying health issue, she simply needs to change her lifestyle.
Her ankles are causing her a lot of pain, and I do have sympathy for that, but she is now insisting that she cannot drive or go anywhere unaccompanied and that because I am "at home all day" I should chauffeur her around.
When I have told her I can't do this regularly, she has become hysterical and cried that I'm refusing to support her and discriminating against her medical condition.
She absolutely will not help herself, and has said some really vile things about the doctor, and is telling everyone she has a gland problem - and then goes home and eats an exceptional amount of food pilfered from my kitchen.
She takes great delight, however, in telling me that I'm really fat (I'm not, at least I don't think I am).
AIBU in refusing to ferry her around and not supporting her with her "medical problem"?