Anything is possible but it seems to me it is not likely she will be denied based on her father being a visa petition beneficiary for a visa that...

Generally one does not "age out" until one turns 21. So it should not be a problem that the child turned 18. There may be other issues such as...

It seems to me that USCIS might think that the mother is actually the one doing the work, not the child. And if so, it would constitute...

You should contact your government to fix that. This site is for U.S. immigration law and the U.S. cannot do anything about Australian passports.

An asylee can petition his or her spouse and minor children for derivative asylee status. Each derivative needs his or her own I-730 application.

You could get a new one, or you can consider the date on the certificate to be the official date and use that date from now on.

If you left the U.S. for ten years, you abandoned your lawful permanent resident status. You need a new immigrant visa in order to get permanent...

There is a lot of missing information. Reinstate what? If your I-130 is terminated, you need the petitioner to file a new one.

No, I do not think it is likely at all that the trade issues between U.S. and Canada will cause any change in U.S. citizens visiting Canada.

If you do that, you will be admitted as an H4 and not as an h1b. If that is what you want to do, then that would be fine.