Izzy Hurlburt started the scoring for the Mustangs with an assist from Mary Duffy ( 16:29), then Emma Snyder was assisted by Camryn Champlin just 3 minutes later.
In the second half Micaela Jacobs was able to clean up rebounds on both goals to seal the win for Massabesic.
Julia Gregoire stopped all 3 shots she faced while Haley Moody save 8 of the 12 she faced for the Rams.
The Mustangs play Monday at home vs Marshwood.