The Rams then got a bit of good fortune, as Cortland's Nacriema Mann saw a possible tying free throw with 49 seconds left disallowed because of a lane violation.
J-D, with the ball back, missed two different shots, but maintained possession, forcing the Purple Tigers to foul Gratien with 6.6 seconds to play.
Again proving to be clutch, Gratien hit both foul shots, giving her 24 points for the night, and Cortland's 3-point attempt to tie was off target as time ran out.
Other than Gratien, Theresa Hernandez, with nine points, was the main J-D threat. Cortland got 20 points from Courtney Tennant and 17 points from Maggie Brown.
As this went on, CBA continued to prepare for its trip to J-D by toppling Chittenango 54-34. The Brothers steadily dominated the Bears, building a 44-19 lead through three periods.
CBA's backcourt of Ellen Voorheis and Leanne Ockenden remained steady, as Voorheis got 15 points and Ockenden added 13 points. Kelsey Johnson had eight points, with Victoria Johnson and Katie Webster got six points apiece.
Of course, the boys teams at J-D and CBA are also gearing up for a showdown, coming next Friday at Buddy Wleklinski Court. And both would win on Friday night.
J-D, no. 1 in the state Class A rankings, had its closest call of the season to date, but still beat Fowler 80-58. The Red Rams only led 37-28 at halftime, but used its relentless pace to get away from the Falcons in the second half.
DaJuan Coleman, against the school from which he transferred, poured in 26 points, while Lamar Kearse hit on 22 points and Tyler Cavanaugh stepped up for 16 points. Demitrius Mitchell added eight points. Malcolm Jones (20 points) and Larry Rivers (17 points) led Fowler's effort.
CBA, meanwhile, went to Chittenango and beat the Bears 73-57, using a 25-12 first quarter to gain control.
Greg Thomson established his inside presence, earning 17 points, while Shakir Evans hit on four 3-pointers on his way to a season-beat 17 points. Fellow guard Troy Bullock got 15 points and Pat Wiese earned seven points.