Helen is Henry’s TA, and has an unearned reputation for saving the school from his more dangerous lab accidents. Don’t assume she’s more responsible just because she’s less excitable—she’s right next to him over the cauldron, eager to see what’s going to happen, and often has the wilder ideas.

Helen used to be a Healing student, but Professor Eleanor kicked her out after her “cold medicine” turned the Headmaster from a Mirror dragon to a Gaoler. Ghost, her familiar, doesn’t have any negative reactions to her experiments, but that doesn’t comfort the healers for some reason.