Hey Amanda.
Firstly, don't google !! We all do it, and we all regret it afterwards
2ndly, as your Mum has an emergency appointment tomorrow, there is little else you can do. You are already on the right track.
Are you going with her ? If you can, that would be great. I'm sure she would appreciate it.
I'm guessing the GP will refer her to a specialist for tests and possibly a look see.
Is your Mum definitely post meno ? Has she been taking any HRT ?
Stay strong. Others will be along soon to give you more help. Get some sleep.
All the best, Pants.