Shaeli is a Fairy. Her element is spirit.
She was falsely accused of something her twin had done and was banished from Fairy. Shaeli wanted to fit in with the human world and she was taken in as a ward of the 'Aunties'. They ran an occult business out of their home. At some point when it becomes obvious that Shaeli's ability will superseded the Aunties they become intimidated by her and deposited her with Fanny -- kind of them I suppose-- they could have just tossed her out on the street.