Gah I remember when DS had gastro recently - on and off for five days. We basically hibernated in the house and every time I fed him I would surround myself in towels to try and catch the rivers of vomit.

Don't forget you can always ring the nurse on call - if SA has something similar to what we have in Vic!

Anyway you've been given lots of great advice - trust your mummy instincts, if anything seems off, you know her best - take her to the GP or ED.