The Scarlet Knights' goalkeeper made 12 saves, shutting out the Terps.
The Terps outshot the Dukes 24-3 as they picked up their first home win since Sept. 21.
Maddy Murphy's fourth-quarter tally prevented the Terps from upsetting the Hawkeyes.
Coach Missy Meharg was pleased with the sustained dominance her team had in their previous matches and wants to see it continue with top-tier opponents up next.
Bibi Donraadt netted two goals as the Terps dispatched the Eagles.
The Terps dropped their first game of the season.
The Terps will meet former conference rivals in Duke and Boston College over the weekend.
The Terps and River Hawks will not make up their game after a storm paused the match late in the first quarter.
"If you can't battle with each other off the field, then there's no way you're going to do it for each other on the field."
The Terps held two exhibition matches over the weekend, playing their annual Red-White scrimmage and hosting local club team, DC Dragons.