[How did she get roped into this? She airs a soft scoff.]

Given the circumstances, that you are more interested in how you look is a bit silly. Any reflective surface will do. You don't need a mirror. Just use something that you can see your reflection in. A gemstone, anything with a reflective surface will do the same thing.

[It dawns on her that she has a pretty little gemstone in her headpiece, but she can't imagine it's large enough to be of much use.]