Going strictly off the stats...
Mercyhurst wins game one by 4-0. Total shots on goal were 21-16 for Mercyhurst. That's four goals on 21 shots on goal. Penalties were 9-3 for Penn State.
First period stats: shots on goal were 12-9 for Mercyhurst, no goals, no penalties for either team.
Second period: shots on goal were 10-2 for Mercyhurst, three goals, and penalties were 4 for Penn State and 1 for Mercyhurst. Penn State had 2 total shots on goal for the entire period, and 4 penalties.
Third period: shots on goal were 7-5 for Penn State, and they took 5 more penalties (just in the third) to Mercyhurst's 2, with one more goal for Mercyhurst.
Six of Penn State's forwards didn't register a single shot on goal for the game (Alyssa Machado, Maeve Connolly, Carrie Byrnes, Julie Gough, Mya Vaslet, and Alva Johnsson). Going by penalty minutes, Maeve Connolly and Karley Garcia both got 10-minute penalties late, so this one must have ended with some excitement.