Jack's little sister (Jack Frost x Reader)

You are Jack's little sister, you have another sister called Mary. You are a fire spirit. You can control fire with your hands, fly,and other powers that I will introduce throughout the story. You were killed in a fire one night a couple months after Jack's passing. You awoke to a burnt house unable to remember what happened. Then the Man in the Moon told you that your name was Y/N Blaze.