How should a girl act regarding money she inherited from her mother while she is a minor, given that this money has increased through bank interest, and is she required to pay zakat for past years, and is it permissible to use this interest to pay off a bank loan for her father?

It is obligatory upon the guardians of orphans to invest their money in lawful ways and to pay zakat. They must dispose of usurious interest by spending it on public welfare. It is permissible for a indebted father to use it to pay off his debt, along with repentance. Zakat on the capital must be paid for the past years if it reached the nisab (85 grams of gold), and its amount is 2.5%. In inheritance, the male receives the share of two females. The matter of inheritances is serious and must be referred to the Sharia courts for investigation.