More information is needed about the child. Consult with an attorney for guidance.

No you must wait the priority date is current to file for the I485.

Yes you may qualify for a U visa. Consult with an attorney for guidance.

Best to consult with an attorney to discuss the previous case history and what exactly previous attorneys did.

More information is needed about your working relationship.

Yes you can refer to the USCIS form instructions for guidance.

Best to discuss your case and marital history with an attorney to explore VAWA.

Yes assuming you are a USC and she is entered the US legally.

Best to consult with an attorney to discuss next steps.

The divorce from Ethiopia should suffice.