"Oh." She has never heard of such a thing, but to be fair, she is still trying to wrap her head around the concept of "germs" and "cells".
Another thing she isn't used to yet are the strange contraptions people wear on their eyes these days. She manages the sunglasses on fairly well, but it is very dark to her.
"Thank you," she says with a slight smile, and almost asks what a migraine is, but manages to refrain. There's a rumble in her head. Oh, not now, please not now...