The contest turned into a competitive battle down low between a pair of big-time post players -- Couch's Lizzie Nessling and Mansfield's Jessica Berry.
Berry led all scorers with 19 points in the game, most coming from point-blank range with bodies draped on her. Nessling used a variety of nifty moves in the high post to rack up 16 points for Couch.
But while Berry didn't get a lot of help from Mansfield's perimeter players, Nessling got plenty of help from her back-court teammates.
Megan Hipps tossed in 17 points to pace the Lady Indians in scoring, while Crystal Britt finished the game with 10 for Couch.
The game was tied four times in the first period, but four straight points to end the frame from Berry gave the Lady Lions a slim 15-14 advantage after one.
Jordan Hale opened the second with a 3-ball for the Lady Indians, but Berry ripped off six points inside to help Mansfield to a 24-18 cushion.
But Couch didn't stand still.
Instead, Nessling and Hipps got busy, racking up eight unanswered points, six from Hipps, to end the first half with Couch in front 26-24.
And the Lady Indians managed to hang onto the lead the rest of the game.
Couch held Mansfield to just seven points in the third, resulting in a 41-31 Lady Indian advantage after three periods of play.
Cassie Roberts (eight points) drilled a pair of triples in the third for the Lady Indians.
With a 10-point cushion on their side, the Lady Indians kept pushing farther and farther away from Mansfield in the fourth, until Couch had ended the Lady Lions' season by the count of 58-45.
Stephanie Nessling and Shantana Collins finished with two points apiece for Couch.