A woman is accused of assaulting a 70-year-old Houston parking enforcement volunteer who was writing her father -- a double amputee -- a ticket for not having a disabled permit placard, KTRK reported. >> Read more trending news Jade Williams, 18, was charged with misdemeanor assault for the Tuesday incident, according to the Harris County Pct. 5 Constable's Office. David Hansen said he was writing a citation when the SUV owner and his daughters confronted him about it, KPRC reported. 'Then she wanted to fight me,' Hansen told KTRK. 'She's walking around going, 'Come on, let's fight.' I kept retreating all the way back to my truck, and when I got to my truck, she, with an open hand, slapped my face and that's when I called 911.' Williams’ father, Byron Williams, was wearing a prosthetic leg at the time of the incident, KTRK reported. He also lost his arm in a motorcycle accident. 'He started swinging,' Williams told the television station. 'Yes, he pushed my dad and when he pushed my dad, my dad backed up, like my dad was about to fall, and I said, 'Don't put your hands on him.'' In a statement, Houston city officials said they were “very upset to hear about this incident,” KPRC reported. Williams denies she hit Hansen. 'He's trying to make it seem like since I'm young, I assaulted an elderly person,' Williams told KTRK. 'That's not me. I'm a very respectful person.'