I like your descriptions and your treatment of a difficult subject. Not everyone will agree with the parent's beliefs but many would relate to their situation.
I suspected that girl in a coma and girl on the balcony were the same before the big reveal but your writing shows promise.
You evoke the knight's mental state very well, I felt sorry for him. If you develop this further, you could describe soldiers in industrial age armies reaction to the knight. They would be shocked and bewildered by his appearence.