Okay I thought of a system of magic that'd be fitting for a story about abuse and getting past it. Basically magic is something that grants a person born with it powers based on their childhood experiences, powers can change a lot during childhood but become "solid" after puberty. For example my MC's are two eight year olds who were raised on a isolated manor by their abusive grandmother, they accidently killed her and were found living on the streets and placed with foster parents. Since they only had each over for companionship and love they developed the ability to create "imaginary friends", beings they could only see and possesed powers like lightning fires, possesing people, ecetera. Due to their dependence on each over they need to be togethor to summon any given friends. Any other powers and abused kid might gain?