The girls game was a whistle-happy foul affair with the officials calling 50 total fouls in the contest.
The Lady Cougars had a distinct home-court advantage, going 16-24 at the free throw line, while Forrest had half as many attempts in a 9-12 effort from the charity stripe.
Despite the unfairness, the Lady Rockets broke an 8-8 tie midway through the first quarter with an 8-4 run to end the period.
Candace Daughrity sparked the rally with a rebound and put-back, plus a steal and dish that led to a Hannah Phifer three-bomb.
Middle Tennessee Cchristian School came back at the outset of the second quarter with a 5-0 run and took a 17-16 lead on a Meghan Smith basket.
A Savannah Brothers three-pointer seesawed the lead back to the Lady Rockets until the 1:15 mark of the second quarter when Smith knotted the ballgame at 23.
Phifer answered the call with a three-pointer to make it 26-23 before Smith hit one of two from the line to end the first half.
The Lady Rockets stayed tough and held a 36-34 advantage late in the third quarter after a Brothers drive to the hoop.
MTCS got a pair of late three-pointers, beginning with an Ashlynd Wilkerson three-bomb and a buzzer-beater trey by Juliann Peters that gave the Lady Cougars a 42-39 advantage, entering the final eight minutes of play.
The contest went back and forth for much of the fourth quarter as foul after foul was whistled.
The Lady Rockets would trail 51-48 before a Hannah Evans basket and two Brothers' foul shots edged Forrest back in the lead at 52-51.
A three-point play in the paint by Devan Walker gave MTCS the lead once again, but a Phifer rebound and put-back tied the game and it would remain knotted as Wilkerson and Brothers traded baskets.
With 32.5 seconds remaining in the game, Wilkerson scored after a Forrest timeout and the Lady Rockets would not be able to score again in the three-point setback.
It was the third consecutive District 9-A loss for Forrest with the margins of defeat at three points twice and four points at Huntland.
Brothers led Forrest in the scoring column with 18 points, while Phifer was also in double figures with 14 points.
Tayler Andrews provided a nice spark off the bench, scoring seven points as did Caitlyn Yost.
Daughrity and Evans ended up with four points apiece and Scarlett Roberson rounded out the FHS scoring with a deuce.
Wilkerson led all scorers in the contest with 20 points.
MTCS would build their lead to 32-21 after a Ty Hegeman basket in the paint, forcing a Forrest timeout with 3:19 remaining in the third quarter.
Mark Pope and Tyler "Juice" Rumley went downtown on back-to-back possessions for the Rockets, cutting the MTCS lead to five points, but the Cougars surged ahead again and led 40-31 at the half.
MTCS' David Capps, who poured in 32 points to lead all scorers in the ballgame, scored the first five points of the third quarter and the Cougars used Capps' momentum to surge ahead by 14 points after three quarters at 59-45.
With 5:16 remaining in the game, MTCS still held a 14-point lead when Forrest mounted a serious comeback with a 13-3 run, highlighted by nine points by Daughrity on a trio of long three-pointers.
After the third Daughrity trey, Forrest trailed by just four points at 68-64 before MTCS put the Rockets way with a 14-8 run to end the game and claim the win.
Rumley led the Rockets in the scoring column with 17 points, while Daughrity had a big night from beyond the three-point line with four treys in a 14 point effort.
Zach Horvath and Pope scored 12 points apiece, Lucas Pruitt and Dakota Zimmerman scored six, Hoeft added three points and Will Edmomson had two points.