I have a low prescription two (-0.5 in one eye and -2 in the other) and I stopped wearing glasses in March-May last year cause I work at the ER in a hospital and I was pretty paranoid about COVID, I thought the less stuff I wore in my face (besides the masks and the safety glasses) the less of a chance of catching the bug. At first it was a bit hard but as soon as my eyes got used to it, it's not such a big deal, really. Then I started wearing contacts cause I got sick of my glasses getting all foggy wearing the mask.
But if she's used to not wearing the glasses onstage, it's not such a big deal, really.