Kristin Powers added ten points for Mendon.
The Vikings used a 20-5 run midway through the first half to blow the game open.
Liz Greendyke paced the Knights with 12 points. Bayley Axelrod beat the first half buzzer with a long three pointer for Sutherland.
Vikings miss chance in final seconds
Monarchs scare New York's top team, but fall in state semis