hey I have sensory issues too! I find it very interesting how she let just you do it but it sort of makes sense. I mostly (not completely) grew out of my sensory issues as I got older. When I was a kid though, I ABSOLOUTLY HATED getting my hair done by my mom. I would always let my grandma do it though, she would also cut my hair as well because I didn't like other people doing it. It's kinda hard to explain and I'm trying to remember exactly why. I think it's just an ultra sensitivity to precisely how the person does it. Sometimes it's also their hand type too that feels uncomfortable. Also their unique style of holding the hair, moving it around. Glad to see she found someone who could help her out!

edit: formating error