Ashe, who tied his career-high for points, also had five steals. Gregory Graves had 10 points and pulled down 13 rebounds for Mount St. Mary's (10-11, 6-4).
Leading 41-33 at the half, Mount St. Mary's had a 22-8 run early in the second period to take a 63-46 lead with 10:40 left. Ashe had a three-point play to start the run. Sacred Heart charged back to close to 69-62 with 2:33 remaining but Ashe had a layup and Taylor Danaher and Charles Glover made six straight free throws to hold on for the win.