I posted this while my mum was working. I spoke to her when she got back and we decided she needed to see a vet, so my mum made an appointment. She managed to get one for while I was at work. Unfortunately, they decided it would be kindest to euthanize her as she was too small and too far on for antibiotics to be fair. The vet said she had a bug or illness, and had fluids but no solids.
I'll make an intro post soon, I've been lurking for a couple weeks since I got my own hamster, and my mum bought Belle slightly after.
Here's a link to a pic from Saturday. She was a cute little fluffball and she seemed just fine less than a week ago.
https://api.eyefi.com/3/files/207733.../image.jpg?v=4 Rip<3
Edit~ oh, but does anyone have any suggestions on sterilizing her tank, wheel and playthings (Mostly wooden) for another hamster to enjoy, when my mum feels ready?