Dont worry too much to give birth in Australia. As long as your friend has been following up with GP and hospital in schedule, it would be OK.
For the spotting, if she'd done the ultrasound already in Aust, the GP should tell her what's happening and what caused the spotting. Did the GP tell her if she had Uterine Fibroids ? That's quite common during pregnancy and these fibroids would cause bleeding as well.
My baby was born last week
I only did 2 ultrasounds during the whole pregnancy period..
GP-1 ultrasound 9 wk pregnancy
Hospital-1 ultrasound 19 wk pregnancy