Gymns became the final team to qualify for the Warehouse Fitness Floodlit Cup semi-finals on Sunday.
A goal in each half from Kayleigh Whitehead booked their place at the expense of Colby in a 2-1 win.
The southerners, who only needed a draw to qualify, replied through debutant Sarah Wignall.
FC Isle of Man to host in-form Atherton LR
Visitors currently on eight-match winning streak
Hockey: Cup semi-finals await this weekend
Places in April finals up for grabs in last-four phase
Rugby: Douglas' play-off quest to continue against Firwood Waterloo
Vagabonds Ladies to welcome Bury to Ballafletcher
Football: FA Cup & Woods Cup continue on busy weekend schedule
Northern showdown in top flight among league clashes
