Please make sure to respond to the Request for Evidence ("RFE") by the due date. USCIS probably changed your case status because you just had...

Yes, you may seek to change your Non-Immigrant Status from B-1/B-2 to F-1.

Your mother should be ready to answer questions by an inspecting officer at a port of entry. Questions could be about (but not limited to) her...

If you still can, consult with an immigration attorney as you might risk your permanent residency. If time allows, file a re-entry permit before...