It depends on whether you otherwise qualify for SIJS. Consult with an attorney for guidance.

No it likely should not but if so, a simple explanation should suffice.

This depends on the current court backlogs.

It is a follow to join indication where the family arrives at a later date.

Yes you may contact an attorney using the Avvo search tool.

You will likely need to refile the I130 but best to contact NVC to inquire.

No likely not but it may impact the adjudication. Consult with an attorney for guidance.

No this alone is not a deplorable offense.

Your situation is unclear. Consult with an attorney for guidance.

For as long as they desire as a USC citizen.