The Curses of Penny and Phaedra

Penny and Phaedra Hallkett had been cursed since the day they were born. One to never see and one to never be seen. Penny was blind and Phaedra was cursed to be invisible. When their mother is taken by the same Demon who cursed them at birth, a Demon who wants revenge on their mother, Penny and Phaedra are forced to go on a quest to find their mother, even though it may already be too late, and put aside their differences from other people to navigate this world; a place where they have never been accepted.