An NYPD “super rookie” shot the man accused of killing another officer and leaving his partner clinging to life — and the shaken hero can’t get what happened out of his head, his mom told The Post on Sunday.

Officer Sumit Sulan, 27, is still struggling to deal with Friday’s deadly ambush, his mom said.

“His brain is stuck on the situation,” Dalvir Sulan, 60, said of her hero-cop son.

“I’m proud. Everyone say he did good,” she said of Sumit.

But “I feel bad for the other [officer],” she said from her Queens home. “He died. We really feel bad. We’re sorry. We’re hurt. The other guy is critical, and we’re hurt.”

Police said crazed career criminal Lawshawn McNeil, 47, ambushed the cops during a domestic-violence call at his family’s home in Harlem, shooting and killing 22-year-old Officer Jason Rivera and critically wounding his partner, Wilbert Mora, 27.

Officer Sulan fired back at McNeil, wounding him, during the deadly mayhem. McNeil is currently hospitalized in critical condition.

A law-enforcement source described Sulan as a “super rookie,” noting he has been on the job since April and at Harlem’s 32nd Precinct for only two months.

“He did a great job,” Dalvir Sulan said of her son, who emigrated from the family’s native India about 15 years ago. “We’re proud of him, but we’re sorry for both of [the other officers].”

Asked about McNeil, Dalvir Sulan shook her head.

“That person, he’s not really good,” she said.