Mona

Mona is a worker at St. Luc's, where the Hunters go in the first volume. Mona is able to revert newly-made vampires back into humans, as long as the vampire still has a reflection.

She appears at St. Luc's as the Taker, granting the Hunters passage. When Teresa asks for Mona, she takes the vampire girl, introducing herself and saying that she'll fix the girl up.