There wouldn't be any heartbreak for the Mount Sinai girls lacrosse team. There wouldn't be a collapse that would aid another dramatic Bayport-Blue Point comeback.

Kasey Mitchell, Sydney Pirreca and the top-seeded Mustangs wouldn't let it happen again.

"We couldn't lose," said Mitchell, a Stony Brook-bound senior midfielder. "I was not leaving here if we lost. It wasn't happening."

DataGirls lacrosse champions

Mount Sinai held off the second-seeded Phantoms, 7-4, in the Suffolk Class C championship Tuesday at Dowling, nearly a year after Bayport-Blue Point overcame a late two-goal deficit for an 11-9 win over the Mustangs for a spot in the Long Island Championship.

This year, it will be Mount Sinai (17-1) that advances to face the Nassau C winner, either top-seeded Cold Spring Harbor or second-seeded Oyster Bay, at 2:30 Saturday at Adelphi.

"That game last year hurt a lot," said Pirreca, who had one goal and helped Mount Sinai dominate possession. "It was in our head for 365 days, so we used that fuel to fire us today."

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Mitchell, who scored twice, assisted on Meaghan Tyrrell's goal, which opened the scoring 4:56 into the game. Pirreca scored five minutes later, and Camryn Harloff and Mitchell added a goal apiece to help the Mustangs take a 4-1 lead into the break.

Hannah Van Middelem made five of her six saves in the first half.

"She was absolutely amazing," Pirreca said. "She definitely held us in this game. There were head-on, point-blank shots, and she stepped up big for us."

The Phantoms (13-4) scored three goals in the last five minutes, but Mount Sinai had already built a 7-1 lead.

This time, the Mustangs made the plays to squelch the run.

"Last year, bottom line, we broke down," Pirreca said. "We thought we had it."

This year, they knew they couldn't lose it.