I really need some advice. There is a woman I have never spoken to but see every day on the school run, always alone (no evident partner) and with her DC who is a few years below my DS. The reason I notice her is because she walks, everywhere, all the time, and after she has dropped off child she walks to a gym c. 2 miles away where I also go, then walks home. Every day. Possibly even at weekends as have seen her whilst driving past. And she is SO thin. Same height as me (tall) and possibly 45-50 kgs, and getting thinner. Do I a) mind my own business, it's nothing to do with me, b) mention it to gym staff (gyms are about health no? Not just losing weight), or c) maybe the school? Any advice gratefully accepted, it's just awful to see her disappearing and she has a small child.