The ruling on a woman who enters Ramadan while owing days from the previous Ramadan

Question:
There is a woman who broke her fast for seven days in the Ramadan before last due to menstruation. She fasted four of those days, leaving three. Then the previous Ramadan came, and she gave birth to a child that was in her womb. She broke her fast for twenty-six days because of this, fasted ten days, and left sixteen days. Now Ramadan has arrived and she has not fasted. It is known that fasting affects her such that she cannot walk, her chest becomes tight, and her mental state is very weak at work. Should she fast, or pay the expiation?

Answer:
No, she must fast, but it is postponed if she is currently unable. It is postponed for her until after Ramadan, until she finds the strength, then she fasts the remaining days from the first instance, the three days she owes, then she fasts the remaining days she owes from the recent Ramadan. This is what is obligatory for her [al-Tawbah:16], He the Exalted says: [al-Baqarah:185].
And if she delayed it due to inability—she delayed the three days due to inability—she does not have to feed people. But if it was negligence, she must pay a sa' and a half, half a sa' for each day, for the three days remaining from last year. As for this year, if she delayed it and was unable to make up these days due to her inability and illness, she owes nothing; she only makes them up, and she does not have to feed people in the future.