The Terps took their first point against a Big Ten opponent in seven games.
The Terps were unable to record a shot on goal against the Deacons in one of their worst offensive performances of the season.
"We saw a lot of fight when we went down," coach Ray Leone said.
Catherine DeRosa's 74th-minute penalty lifted the Terps to their third straight win.
The Terps got some younger legs up to speed and let some more experienced ones rest.
Tolson kept the Terps in the game with a host of timely saves against the Wildcats.
The Terps started three freshmen against Michigan State and mustered one late-gaem goal.
"They'll have your back."