She also had deep-seated feelings of inadequacy. Even if Mike hadn't been acting out on his own feelings of inferiority by lashing out at her, she still would have spent her youth moaning about how nobody really liked her. This is because she had an extended awkward period after years of being praised for being pretty. When the attention faded away with her looks, her self-esteem went with it. She was too preoccupied with feeling bad to notice that she had a pretty good life.
This has left us with a bitter, entitled woman who feels that everyone else has to make her wedding perfect while she just stands there in her white dress looking perfect. They should not expect thanks because her life was sooooo hard.