Ursuline tangled with former conference opponent and league champion Alderson Broaddus and emerged a 15-13 winner on the road.
The senior Gilmore was all over the stat sheet, making notable contributions on both sides of the field as the Arrows earned their first win of the spring.
She had a team-best five caused turnovers, earned four draw controls and picked up four ground balls.
Gilmore also scored one goal on five shots, an important one at that in such a close decision against the Battlers.