My 14 year old daughter fasted the first 16 or 17 days until she got her monthly cycle and then after her 7 days, she went back to her fasting and fasted for one day and ended up in the emergency room. The doctor said that she couldn’t fast for the remaining days of Ramadhan because she needed to drink a lot of water and fluids. What should she do to make it up for the remaining of Ramadhan?

If her doctor told her she should not fast the remainder of the month of Ramadhan, then she should not fast. After Ramadhan, she simply makes up those days (when she feels better) just like she’d make up those days she missed due to her period. She doesn’t have to pay any Kaffara or Fidya. She just makes up the missed days.