Do you have any approval notice? If not, then your green card is not on the way.

Reentering the U.S. is not an abandonment of an application for a reentry permit.

She can petition for her step father to immigrate.

Normally they will also deny the i-485 and with that, the EAD. There is a discretionary EAD for a case on appeal.

Here are the instructions from the CIS website:...

Try an E2 investor visa. Or an immigrant investor visa if you have the funds for that.

Yes, you can apply. Yes your husband can apply for a student visa.

The B1 visa is appropriate to attend a business conference. Normally a person is admitted for six months on a B1/B2.

I have never seen anything to suggest that getting a new social security number invalidates one's passport, but with all of the new biometrics...

She should file for a work permit based on the pending I-485.