It should not make much difference. However when the visa is available to be issued, she must have a U.S. domicile to comply with the affidavit of...

The I-94 is for your admission as an H1b. It is not specific to any individual employer.

I don't see any reason you could not do that. I do not know if such requests are effective.

The regulation refers to the "accompanying parent". If you already immigrated, you are not the accompanying parent. The section also refers to...

In the past it took about six months.

I am not aware of any prohibition against spouses having direct deposit, joint accounts for L1 and L2 visa status, or any other status.

You pay the I-130 fee once for your mother and once for your father. You do not pay any other fees until CIS approves and forwards the...

Yes, you need a visa to return to the U.S., the I-94 is not a visa. You can check if you qualify for visa revalidation.

The short answer is no, you do not need to be married indefinitely to keep your green card. Divorce does not invalidate one's green card.

If you have not been granted permanent resident status, you should try to maintain your nonimmigrant status.