After regaining her outdoor title in the high jump last winter, Terwilliger came out this spring and successfully defended her outdoor high-jump crown, clearing 5 feet 5 inches at the state championships at Brown University. The senior also took first in that event at the Class B and Southern Division Championships, as well as the Schomp and Cumberland Invitationals. Terwilliger capped off her final high school season by placing eighth in the high jump at the New England Interscholastic Outdoor Track Championships in Saco, Maine, with a leap of 5-3.