Donraadt notched the game-winner in the second overtime period.
Paige Kieft and Christina Calandra are both auditioning to start for the Terps.
The Terps recovered from their worst defensive performance of the season with a shut out against a top-five opponent.
The Terps have now lost three straight games against the Nittany Lions.
The Terps haven't defeated Penn State in nearly 600 days.
The Terps hope to use lessons from past losses to take down the Nittany Lions.
The Terps ousted the Scarlet Knights in the closing moments of the back-and-forth battle.
The Terps came out on top after a frantic final five minutes of play to clinch a share of the regular season title.
Missy Meharg needed to fix the Terps' backline and turned to the assistant coach and former Olympian to do so.
The Terps didn't allow the Hoyas a single shot.