It varies depending on the consulate where the interview will be scheduled.

Yes you may do so if the information is not known to you.

Yes you can do a FOIA request to obtain a copy of your immigration history.

Yes it will mean that you need a cosignor for financial support purposes.

It may be worthwhile to consult with an attorney to determine if such assistance would benefit you.

Best to consult with an attorney to review your history.

No unfortunately this is not an option.

It varies depending on court and case. Best to consult with your counsel for guidance.

You should do your best to obtain all requested evidence as this will be scrutinized.

She can apply for a tourist visa on her own by establishing the requisite family and financial ties.