In her case I was judging from knowing her for years and her reaction when I made fun of her shoes. She really was just using the parking because she was too lazy to walk. She isn't fighting a disability - would have known about taht or she would have volunteered that when I made fun of her.

You're one of those infuriating people who make me think twice before saying something to people who appear not disabled getting out of disabled spots. 85% or more of the people you see deserve to be ridiculed for abusing the system out of laziness.