Inadvertent peeping tom

Opposite my office is a row of shops with flats above. There's a woman in the top flat brushing her hair looking in a mirror she has leaned against the window. She hasn't a stitch of clothing on. Bare. Nude.  Like a naturist (as opposed to naked, like in porn, if you recognise the difference). But we have builders on the roof of our building. I doubt she realises she can be seen. Or maybe she really is just nude and doesn't care to be seen that way.