The Cost of All Things by Maggie Lehrman
When Ari was little and her parents were killed in a fire, the trauma was almost unbearable. To forget, she took a spell. Years later, Ari visits a hekamist to get another spell to erase all memory of Win, her boyfriend who recently died. But there are consequences to taking multiple spells … Told from four different points of view, the past and present are woven together and brings to light the truth behind a terrible tragedy.