Question for Ministry of Foreign Affairs & Regional Integration MFA- Passport Application Online

I was told by a Ghanaian that in order for her to get her passport and visa to leave the country that she must pay a debt that her mother took out a bank loan and she claims she signed as cosigner if the debt was not paid by her mother. Which they claim they were rob. So if this is true. Then how can I get a certified bank statement showing that she is in debt with this bank if so.