Our au pair started last week, first one we've employed. She is lovely, great with the kids, enthusiastic and kind. But she rarely washes and every room she goes into smells really awful. I think she may have athletes foot - her shoes smell so much she won't bring them in the house - and I'm not sure how to tackle this without being extremely rude. The whole house stinks! I know I sound awful, but I don't think I can live with this. I am very happy to pay for new shoes for her, and any meds she needs but I'm not sure if I'm crossing a line. Help?