It was the fourth straight win for the Tigers, who are now 11-4 overall.
Meghan Galloway added the other goal for Ridgefield, which scored twice in the first period and three times in the second.
Meghan Hyatt and Reilly each had two assists. Erica Ely, Meredith Keenan, Galloway and Rao added one assist apiece.
Ridgefield goalie Heather Ogden made 10 saves for the shutout.