There is no paper you can wave in anyone's face, and I suggest you research the operation of the Ford Escape Hybrid (FEH) A/C operation. If your mother went unarmed to a dealership and bought, it's her fault. Where do you put a car salesman on the food chain? There just above the used car salesman, don't you think? If you cared about your mother's vehicle, you should have been there for her! That said, the FEH may have been the better choice if she puts alot of miles on a car. My guess, she could have done ok with a prius!

GaryG