I agree with my colleagues above. She and her kid should be fine as long as you get married within 90 days and file soon after that.

I recommend consulting an attorney in private to make sure there are no issues with the filing.

The child's age will be a determining factor if you'd like to leave them out of the petition. As long as they do not age out, you should still be...

I recommend getting a new green card especially if she travels a lot.

If you never submitted it, then the answer will be "no".

You'll need to provide documentation to show you have another sponsor that meets the guidelines. I recommend talking to an attorney in private to...

You'll need to depart for one year in order to reset the clock.

https://www.cbp.gov/about/contact/ports/phoenix-arizona-2605 You can call and confirm if they are still located here.

She'll still need to provide Affidavit of Support and use your income to sponsor, if you qualify under I-864 instructions.

It's always best to have pay stubs or any proof of bonafide employment while filing for an H-1b Transfer.