Munden said his team did a good job of making Ruthven-Ayrshire take tough shots. He also had high praise for junior Kaitlin Sandine, who came off the bench to score eight points and grab five rebounds.
Aurelia made 24 of 54 shots from the field, and sank 7 of 8 from the line.
Ruthven-Ayrshire was led by Lynn Geelau, who scored 16 points.
The Bulldogs are now 2-0 in non-conference games, and start their Northwest Conference slate with a game against Newell-Fonda at Newell on Friday night.