With Kelleher casting a defensive shadow, Lenore Doyle, Lesher and Emily Conrad each hit a perimeter jumper to push Lewisburg's lead back to 10.
"That's when you have to find your poise and your composure, when the pressure gets tough," said Stamm. "I thought our girls really relaxed and made some good decisions with the ball. That's the biggest thing we had to do."
Yacko led the Indians with 17 points and 11 rebounds, forging an early season 11.7 scoring average. Bonshock added nine points and a game-high 12 boards.
"We're forcing things right now," said Callahan. "When we become a team, we will be good."