I think I get the same thing your girl had, a few times a year, for the last 10 years or so. However, I’ve never been to doctor about it. The longest I’ve been sick was 2 weeks, but normally it’s around 3 days. Hot showers are the only things that makes me feel better. Only problem is, I run out of hot water after a hour and it takes a hour to reheat. Luckily I have a few rentals next door, to my house. I rent one to my sons uncle and I can go to his shower. So I’ll go back and forth all day. I need to have my gas powered, instant hot water heater installed and I’ll never run out of hot water. It’d make being sick a lot easier. Hope she doesn’t get it very often. Maybe she doesn’t feel like a shower but she should at least try. Good chance she’ll feel better, while in hot ass shower. For me, it has to be super hot.