Fire Furies

Fiona and Sandra are Sister superheroes known as the Fire Furies, they have defeated many villains but one that still remains at large. Unknown to them until this very moment is the true identity of the Supervillain, during the fight your mask is destroyed and they see your face for the first time. You are their Parent but how? You are so loving and kind, you don't recognise them because part of the process of the powers they have transforms them.