MY GARNDMA ASKED ME FOR A..?

I work in a salon as a weekend job whilst i'm studying in university to be a physcologist :) the other day my nan walked in and asked for a brazilian. obviously I was already in my roo mand the receptionist sent her in. I wasn't at all comfortable with this but she didnt seemed to mind in the slightest and just took her underwear off. maybe she's not realised it was me? but I haven't spoken to her about it. one word comparison; kebab. i'm scared for life and I really don't know what I should do. confront her? quit my job. after my waxing she's insisted on booking in regularily. I know i'ma proffesional and I see many gentials every day, but it's really desgusting for me to be treating something that I can fairly say has had it's wear and tear. as well as it being my grandmother. sorry if this seems crude, but I had to let this out somehow. heelllppp?