Only surprised that she was justifying why she didn't need to, when clearly she should have. For someone who has been so defensive as to behcets being the reason why her legs were rotting off, I'd have thought she'd try a bit harder to portray good hygiene, especially after the fecal bacteria saga.
With her current bathroom setup, she has to scoot across the toilet floor, touch the door, get onto her wheelchair, and back to the basin before she can wash her hands. Good luck to anyone else in that house if she gets a gastro bug. A sliding door isn't going to change much of that.
I wouldn't be surprised if she wiped her legs with used toilet paper, because I have exactly 100% doubt that bacteria was introduced accidentally.