Shenandoah (5-1, 2-0 ODAC) scored the opening five goals of the game in downing the Eagles (1-6, 0-2).
Taking a 5-1 lead into the halftime intermission after BC scored 16 seconds prior to the halftime gun, Sisson took over early in the second.
The junior midfielder scored at 24:52, 22:21, 15:02 and 11:55 to help coach Lindsey Lutz' club extend its advantage out to seven goals at 10-3 with 11:55 remaining.
Rollins finished the 8-2 run to start the second with a goal off of a Mary Kogler feed at 10:29.
The two teams then traded the final four goals of the contest.
Shenandoah had a 27-24 advantage in shots and scooped up 23 of the game's 40 groundballs.
Ashley Cross made six saves in posting the victory.