What are the consequences for a woman who broke her fast in Ramadan due to childbirth over ten years ago and has only made up a few days? Is she obligated to make up the missed days or feed the poor? And what are the consequences for someone who intended to fast at night but did not fast during the day due to fatigue?

We are not aware of any statement that delaying the making up of Ramadan fasts necessitates doubling the number of days. Rather, it necessitates expiation (kaffara) according to the majority of scholars if the delay is without a valid excuse. This expiation is the giving of a mudd of food for each day, and the expiation does not multiply with the passing of years.

So, if you intend to make up the fast at night and begin it, it is not permissible for you to break your fast except for a legitimate Shar'i excuse, such as a severe illness that worsens with fasting, or if one fears a delay in recovery, or if one experiences hardship that is difficult to bear. If your headache, exhaustion, or pain reaches a level where you find it difficult to endure, or if you fear an increase in illness or a delay in recovery, then you may break your fast; otherwise, you may not.