Haley Alonso took it all in after her husband became a Mets legend.

Pete Alonso’s three-run home run in the ninth inning against the Brewers lifted the Mets to a 4-2 victory in Game 3 of their Wild Card series and ensured a two-out season was not over.

Haley took to her Instagram Story and reposted a video of Alonso’s homer, which came with the Mets trailing 2-0.

“INDUCED!!!!!!” she wrote.

Haley added “CHILLS” in a separate slide, replaying the home run with Mets radio voice Howie Rose on the call, shouting, “He did it! Pete Alonso with the most memorable home run of his career!”

She also shared a photo of Alonso and Mets manager Carlos Mendoza celebrating together after the win.

“Mendy & Pete,” she wrote, adding a few tearful emojis.

Alonso’s momentous blast at American Family Field was unlikely for so many reasons.

It came against Milwaukee’s closer Devin Williams, who is among the best in the game, while Alonso was in a slump.

The slugger hadn’t had an extra base hit in two weeks.

Just one inning earlier, he had dropped an errant pop-up that thankfully didn’t extend the Mets’ deficit beyond two runs.

“I wanted to be in that place,” Alonso said afterwards. “I wanted to perform for my team. I want to contribute in a positive way.”

Haley played her own part in the team’s success when Pete showed off the Mets’ playoff pumpkin, which the first baseman said he picked out with his wife.

The home run and the win extend Alonso’s career with the Mets for at least a few more games as the team now takes on the rival Phillies in the NLDS on Saturday in Philadelphia.

The 29-year-old Alonso is entering free agency and has given himself a great bargaining chip regardless of how the rest of the postseason unfolds.

Mets owner Steve Cohen was thrilled in the locker room, where players danced under champagne showers.

“It’s just a script for a storybook. A Hollywood writer couldn’t write it better,” he said.