If someone is observing Sawm (Fast)

Q: A man ordered his thirteen year old daughter who had gotten her menses before Ramadan to fast. Due to her weakness, she could not fast and broke her fasting at the end of the month. Should she make up for these days or is she exempted as she could not fast?

A: Since this girl has reached the age of puberty by having her menstrual period, which is one of the signs of puberty for a woman, before the beginning of the month, fasting is obligatory for her. She should make up for the days which she did not fast due to her poor health and she is not exempted from it. However, she can make up for these days whenever she can for Allah (Exalted be He) says, ...and whoever is ill or on a journey, the same number [of days which one did not observe Saum (fasts) must be made up] from other days. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.