‘How could he take her?’

The devastated father of the 19-year-old woman who was stabbed to death by a maniac she’d rejected outside of a Brooklyn bodega over the weekend broke down during a memorial at the scene Wednesday.

Steven Spain, the father of Samyia Spain, was overwhelmed with emotion when he saw his daughter’s blood still staining the street in front of the Park Slope deli where she was slain.

“How could he take her?” the heartbroken father asked in tears.

“The animal that came out of there and they let him in there with a knife,” he said, pointing to the building the suspect allegedly partied at before the attack.

Samyia Spain and her sister, Sanyia, were with a group of friends and relatives inside Slope Natural Plus on Fourth Avenue around 2:20 a.m. on Sunday when the two were attacked by a man after turning down his advances, according to police and relatives.

The stranger, who had been drinking, stabbed Samyia in the chest and she later died at New York Presbyterian Brooklyn Methodist Hospital. Her sister was stabbed in the arm and was taken to the same hospital in stable condition.

“This is what we have to plan?” the father said about making funeral arrangements for his daughter. “We just did a graduation. (Samyia) just got a job at Amazon. She got her license.“ 

The girls’ aunt told The Post on Sunday that the group stopped at a local club after attending a house party — and said the suspect was there as well. 

Family and friends of the girls demanded the club be shut down.

Octavia Bell told The Post Wednesday that her 18-year-old son, seen in security footage with the twins that night, is struggling with his mental health since the incident.

“He said they were in the store, the boys came in acting crazy and talking crap. The store owner locked the guys out while the kids were still inside. When their food was done, the store owners unlocked the door when it was time for them to leave,” Bell said.

When they came back outside, she said, one of them slapped Samyia: “That’s when the chaos started.” 

Bell, who runs a bi-monthly cooking club that Samyia was involved in, said that she’s terrified for her son and daughter who grew up with the two girls. She’s tried to get her children to talk to a grief counselor, but they’re still too shaken up, she said.

“The counseling is a must. These kids are traumatized,” she said.

“My son can’t close his eyes because he’s seeing sh–t,” she added.

No arrests have been made yet in the stabbings. Police are looking to track down two men — one of whom was last seen wearing a ski mask.