The Wildcats (11-4) outscored Arlington (7-6) 28 to 12 in the second half through a combination of good defense and high percentage shots inside the paint to pick up their fifth consecutive win.
"They made some adjustments at halftime," said Arlington coach Larry Andrews. "We didn't react to their adjustments and I think our effort wasn't 100 percent there from the fourth quarter on."
The Eagles and Wildcats remained close throughout much of the first two quarters powered largely by the play of Julia Lacoste - who had 13 points and 2 steals at the half - and Molly Elwell who had 8 points. By the end of the game though Lacoste finished with 16 and Elwell 13.
After having a 23-16 lead about midway through the second quarter, Twin Valley went on a 7-0 run to close out the half - tying the game at 23.
"We had some momentum from late in that first half," said Twin Valley coach Buddy Hayford. "Then the first two minutes of that third quarter the girls know is always the crucial two minutes and they came out and we knocked down a couple threes and those got us going right out of halftime."
The Eagles did not have an answer for senior Hannah Swanson who recorded a double double on the night with 22 points and 11 rebounds.
"Hannah Swanson had a career night," said Hayford. "Hannah had her way in there (in the paint) That's the best game she's played this year. She was all over the boards and she got a lot of put backs. It was a good night for her for sure. I was really pleased to see that."
Turnovers plagued the Eagles in the third quarter as the Wildcats began to capitalize - closing out the quarter with a 37-27 lead.
"That got the momentum going. That shifted [the momentum] totally towards them," said Andrews. "And then when Molly and Julia didn't get the ball in their hands we were relying on some role players that didn't step up tonight."
A little over midway through the fourth quarter the Wildcats had gone a 25-5 run since the start of the second half to take a 48-28.
Colton Butler had 9 points, 4 rebounds and two steals for the Wildcats in the win and Savannah Nesbitt had seven assists on the night.
The Arlington girls will be on the road on Thursday to take on Bellows Falls.
Follow on Twitter @BrandonCanevari