Consider going to local USCIS office for I551 stamp on your passport. You will need a valid passport and receipt of form I90.

There is adverse impact on not attending any infopass appointment. The infopass appointment belongs to you and not USCIS.

The IJ's letter must be reviewed by an immigration lawyer for the best response.

The extension application is fine but the COS application may be problematic. Consult with an immigration attorney for guidance.

While she can remain, she may also consider complying with the terms and requirements of her B2 visa.

A legally divorced USC, may remarry any time.

All requirements for naturalization, including but not limited to residence, must be satisfied at filing N400 for naturalization

Absolutely, yes. Updates of information on N400 are allowed during interview. The updates may nclude but not limited to addresses.

Do not believe all you read online. Contact your local office form Medical and SNAP benefit office for qualification requirements.

Unfortunately, immigration law does not govern drivers license issues. Contact your local DMV office for requirements and qualifications.