She has been admitted to hospital before but this appears to be a bit more serious although not life threatening and they are saying she “could” be out of hospital within a week but possibly a bit longer
And there is your answer. It’s not life threatening. Associated with chronic illness, May be out in a week(ish) and not life threatening. No way, as a parent I’d return from Australia early in that circumstance.
I also say that from experience. I have one with disabilities/chronic illnesses that was in hospital frequently when younger, and now sporadically as an adult. When young, there were some serious occasions on admissions with a good chance they would die, thankfully didn’t happen. On those occasions I absolutely downed tools and that was my one and only priority. I would absolutely have travelled back from wherever I was no matter the distance. However, in the circumstance you describe, as long as their team was happy that, while serious, it was not imminently life threatening and they would update me if any change to the situation, I would see no need to fly back early (I’m in Aus, so any conference etc was usually on the other side of the globe with the exception of the odd one in Singapore).
The fact he can’t be bothered to call is beyond a joke though. Yes, it’s not ‘convenient’ with the time difference but it’s absolutely possible. I always prioritised speaking to my child’s treating team, and that meant broken sleep etc most times, to satisfy myself of the situation and keep up with treatment plan, and would then liaise with DH to explain to him (I’m clinical, so was easier for team and I to speak and me to ‘translate’ to DH😁). That’s not an inconvenience, it’s your child and your spouse so you prioritise this!