The very short version is you won't be catching your flight as you lack your passport. I'd be looking at changing your flight urgently or if you can't - book a new one.
sorry to hear that. Ive never heard of a financial requirement on that visa subclass vs a retirement visa but I'm no expert. I'll let others comment, best of luck to you.
will give you the details but essentially if you are on the birth certificate (legally recognized as a parent) there's a Non-Imm O option if you have a child here.
Question - how long to the US for and what dates? I presuming giving travel time it must be at a min. 3 days. If you leave before the initial expiry date it might be easier to leave then come back on a 30 day visa exempt.