labour 13 wks too early

[beansbeans!]

Hi all; (mods please move if wrong area!)

So I just found out my SIL has gone into labour and she still has 13wks to go.

I can't remember what bubs chances of survival are?

But more so at the moment I am wondering what the drs will do..... Can anyone please help me?

I have no idea if her water broke, or if its contractions, but they have taken her from the sunshine coast to the mater hospital, so Im thinking the labour must be fairly advanced, but I dont know......