Simply apply for a marriage license where you live and get married.

Contact the consulate and request that they allow you to open the DS-260 to correct it.

You will tell the CO the truth if you are asked about it.

You actually must file an I-864 for your spouse. But if your income and assets are insufficient, you must get a joint sponsor.

No, there is a 10 year bar to admission, and that passed in 1992.

If you are approved, you will get U visa status even if you have overstayed. If you are not in the U.S., you will need to wait to get the visa...

Yes, an i-140 is a petition for immigrant worker. You answer yes.

If they have a notice to appear at the court and a scheduled court date, they must attend. If they are ill, they can request a continuance.

Yes, she can apply. No, there is about zero chance it will be approved since she intends to immigrate.

There is no bar to admission to the U.S. if a person accumulated under 180 days unlawful presence.