Missing fast on some days during several years without making up for them

Q: My mother is about 60 years old. She got married when she was 17 years old. She broke her fast during the first four years after fasting had become obligatory on her, mainly when she was 16, 17, 18, and 19 years old. She is sure that she broke her fast for two days when she was 16 years old, but is unsure whether she fasted the rest of the month. However, she is certain that she broke her fast on some days of the month. When she was 17 years old, she broke her fast in the entire month of Ramadan; when she was 18 years old, she broke her fast on 24 days and only fasted the first six days of the month because she was breastfeeding. When she was 19 years old, she broke her fast in the entire month.My question is: What must she do now? Please note that she started to make up for the missed Ramadan fasts when she was 19 years old only 17 days ago. If there is a Sadaqah (voluntary charity) that she can pay, is it permissible that she pay it to her orphaned children? May Allah reward you with the best. (Part No. 9; Page No. 281

A: Your mother must make up for the number of days on which she broke her fast during the months of Ramadan and feed a Miskin (poor person) half a Sa` (1 Sa`=3 kg. Approx.) of the staple food of the country such as rice, dates, or wheat for each missed day of fast if she has can. If she delayed making up for the missed days due to a valid excuse, she is not required to feed the poor, but only to make up her missed days of fast.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.