My mom has PTSD from her car accident and can't we...

My mom has PTSD from her car accident and can't wear a mask, even tho were in a pandemic. It causes a panic attack and she breaks down in tears. My dad has gone in for surgery on his back and my mom wanted to be with him until he went under for his surgery. The hospital staff were rude about her not wearing her mask and wouldn't let her wait with her husband. This is first off against ADA laws and secondly makes it difficult for a woman in a wheelchair to be supportive and help her husband through surgery. Luckily she has me to go in after surgery and help my dad, but if she didn't have kids who would she have help him? No one else in our family can, and we can't have someone outside of the household help because he's fresh outta surgery and has a weak immune system.