She quoted this as though she heard someone actually say it. If that's the case, then she is hardly paranoid.
She's "hearing" anonymous whispers. Not just once, she speaks as though it happens every time she gets her kid out of the car. A vivid narcissist imagination and a victim hood attitude could make for some interesting translations of something as simple as one guy quietly telling another that his zipper is down. She sounds paranoid to me.
My husband and I adopted a baby and when I would get my child of the car I would avoid eye contact with onlookers because I could hear their whispers of, "She's not disabled! Or--if she is--she has no right to have a child!"