Just ignore her when she says stupid things. My mom says stupid %#@&#! like that all the time...she flips out for no reason...she's just plainly a very psycho person. When she starts talking about all this crap I don't argue...I let her sound like a major ***, then I change the subject. Your mother is the type of person you cannot win with...just let her win, or at least let her think she did because when you do this you win...you won't have to listen to her flip out.