I'm not sure about the use of nad's as i've heard its quite painful but that it left behind some type of rash. Look into waxes (although I've read that waxing can leave behind a "bubbly" feel to the skin over time) or maybe electrolysis or even laser. Can be expensive but worth it. Do your research. Be sensitive if you choose to bring it up to her, as I'm sure she has noticed it already and might be very embarassed about it. As far as home electrolysis I own one but like paint lady said dont even know how to use it. I've read certain websites that swear it is permanent. I would be careful with that as it could leave behind scars I've heard.