flash back and pilot

(Y/n) is a abomination. (Y/n) she was scumm to angels and demons. She was supposed to have been killed when she was born but her mother and father ran and hide from the world. When she was 5 years old her dad killed her mom on her birth day witch is Halloween. She ran from her dad and the other creatures that wanted her head. But what happens when she meets two brothers and there blue eyed angel?