Dear
@Grace,
thank you for sharing the situation with us in the community.
As for your question:
A) She should definitly take lawyer.
B)She can make a formal request- best way through a lawyer for the documents to send back. As the documents are her properts/ the properts of her home country.
C)She should contact the Jugendamt and address the problem, if you could share with us the city I can do some specific research on the contact person and let you know.
D)She might have to undergo an age test.
I hope I could help you, if you need further assistance please use the platform.
Best regards,
Nilab