Ruling on one who did not fast Ramadan out of ignorance of its obligation

The questioner says: A woman did not fast the month of Ramadan because she was ignorant, and now she has made up what she missed, but she asks: Is she required to feed people and pay expiation?
Answer: Yes, she has to feed one poor person for every day if her making up the fasts was delayed after Ramadan. She owes a full sa' (a dry measure of about 3 kg), which is one and a half kilograms, for every day for the poor; because she delayed making up the fasts without a valid legal excuse, if her making up the fasts was after the last Ramadan. Yes.