I seriously wonder is this normal, attracted to a girl in a weelchair

I am in an unusual business. I make custom wheelchairs for people. Some of my clients live in institutions and are so deformed that they dont even look human. Alot of the folks I deal with are spinal cord injurys or spina bifida, meaning they are mentally fine, just have ambulation impairments. Ok so here is the meat of this. I would never think of dating someone in a wheelchair. Call me shallow, but I just couldnt see myself doing this. A while back a father called me about his "little girl" and explained she needed a custom built wheelchair cause she has never had an appropriate wheelchair and never knew someone could build her one. After talking I aske what her condition is that warrants her needing a wheelchair, she was born with no legs. Ok, well I have worked with all kinds and have even seen this a couple of times. So we schedule for them to come up and they did. Turns out this "little girl" is 30 years old. Blonde, huge titts, a friggn knock out of a women.,... and very personable.. most folks in chairs are timid and diffrent. I couldnt belive it. She was unreal. All I can think about is having sex with this women. she is smart- well educated, has a state job, car, house... has her stuff together. Is it normal to wanna have sex with her- casue of how erotic this would be???