Defender Hannah Bond notched the game-winner.
Princeton coaches Carla Tagliente and Dina Rizzo are former Terps players.
Frost had six saves in the fourth frame.
Goalkeeper Noelle Frost recorded seven saves.
The Terps' defenders have chipped in heavily on the attack during nonconference play.
“We are a field hockey team that plays united."
The Terps beat the Cavaliers in a shootout and had no trouble with the Dukes.
Frost posted two clean sheets in three games last week.
The Terps won their third straight game.
Forward Bibi Donraadt had the Terps' final goal of the penalty shootout.