The Vengeful Half — Jaclyn Dolamore

Olivia might look human, but she's grown up with a heavy secret: her mother is a potion-maker who fled her home in a parallel world, the Hidden Lands. Alfred is the blind, charismatic young heir to the illegal potions trade. When Olivia's mother is kidnapped by the magic dealers with whom she once made a bad bargain, she has no choice but to trust Alfred's offer of help. They travel to a strange new world of bootlegged American pop culture, lifelike doll people, and reincarnation. Alfred finds himself putting his position on the line to defend Olivia against his family's conniving plans. Maybe he has morals... or maybe he's just falling in love. When Olivia escapes from an attack by a curiously familiar sorceress, she learns that potion dealers weren't the only thing Mom was hiding from. Dark secrets lurk in Olivia's past, and now Olivia must kill or be killed by the girl with whom she once shared everything... Contains interior comics and art by the author.