‘I’ll never meet someone like her again.’ Friends mourn shooting victim, 24, killed in Dorchester while making music video.

Quaaneiruh Goodwyn, 24, of Mattapan, was killed in a triple shooting in Dorchester on Sunday night. She was the mother of a five-month-old boy.Handout

Quaaneiruh Goodwyn was the mother of a 5-month-old boy. She started her own clothing line. She rapped. She sang. She was the glue that held together a group of friends from Newton South High School, six years after they graduated.

Goodwyn, 24, was killed in a triple shooting Sunday night while making a music video on Geneva Avenue in Dorchester, according to friends and Boston police.

“I’m heartbroken because I’ll never meet someone like Quaaneiruh again. She was really a once-in-a-lifetime experience,” said Alyssia Davis, who met Goodwyn when they were in eighth grade in Newton’s public schools. “Her smile is contagious. Her laugh is contagious ... She’s caring. She cried when I cried and have no idea why I’m crying. Supportive.”

Davis said she considered Goodwyn one of her best friends and knows that many others feel the same.

“I’m telling you, maybe 10 people will tell you that Quaaneiruh was their best friend,” she said. “She had a good heart, a good soul.”

Davis said Goodwyn kept a group of about 10 Newton South graduates together in person and over social media. “She was our glue,” Davis said.

Middle school was also when Cecelia Spangenberg met Goodwyn. Shortly after Spangenberg moved to Newton, Goodwyn stood up for her during rough early days at the Brown Middle School.

“She had stuck up for me when I had been bullied my second week in a new school, calling out the girl in the lunchroom,” Spangenberg said by e-mail. “I’ll always remember the kindness and comfort she showed me.”

Quaaneiruh Goodwyn, 24, was killed in a triple shooting in Dorchester on Sunday night while making a music video.

Like Davis, Spangenberg grew close to Goodwyn during high school. Goodwyn and many of her friends graduated in 2016.

“She was an absolute firecracker that literally everyone loved being around,” Spangenberg said. “I don’t recall her having any problems with anybody or ever hearing a bad word about her come out of anyone’s mouth.”

Spangenberg was deeply upset by Goodwyn’s death, not only because she had lost a friend, but because of who Goodwyn was and who she had become.

“Everyone needs to know that she is the last person I would ever expect to be in a situation to have her life taken in such a cold and evil way,” she said. “Out of ALL people it would never be her.”

Goodwyn’s family could not be reached for comment. She was from Mattapan, police said.

School officials in Newton expressed heartbreak over Goodwyn’s death.

“As a school, we were deeply saddened to learn of the tragic passing of Quaaneiruh Goodwyn, a 2016 graduate of Newton South. Quaaneiruh came back for a visit to South just a few weeks ago and our staff were happy to see her again,” officials said in a statement. “We were so proud of her transition to adulthood and of the way she had made her way in the world following graduation. Our hearts go out to her family during this most difficult time as they deal with the tragic loss of this bright light and promising young woman.”

Quaaneiruh Goodwyn, 24, of Mattapan, was the mother of a 5-month-old boy.

Two men in their 20s were also injured in the shootings Sunday, which took place outside a convenience store. One of the men sustained serious injuries, police said. Their medical status was not available Wednesday.

Surveillance video from outside the convenience store shows a group of six people standing and talking on a sidewalk in front of the store. At least two members of the group appear to be dancing in the video, which is silent. Suddenly, the group disperses, sprinting away in different directions.

One person jerks to the side as they are running, then falls to the ground and spins. The person crawls to a nearby car, with one leg hanging slack.

No arrests have been made and authorities have not disclosed a motive for the shooting. The investigation by homicide detectives and Suffolk District Attorney Kevin R. Hayden’s office is ongoing.

“I’ve always accepted death. But this hurts,” Davis said. “I think it’s just because of how she died. No one deserves that. She didn’t deserve it. I hope she gets justice. I pray she gets justice.”

The shootings came during a particularly violent stretch in Boston that has seen gunfire and assaults unfold at schools, parks, and city streets.

Last week, two teenage boys were shot in Roxbury, one of them fatally. Rasante T. Osorio, 14, was the third teenager this year to die from gun violence in Boston.

On Oct. 4, an 18-year-old student was shot and wounded by a fellow student following a fight outside the Jeremiah E. Burke High School in Dorchester. The alleged shooter has pleaded not guilty. That shooting came just three weeks after a stabbing inside the high school.

Last week, Jean McGuire, 91, a prominent civil rights leader and education advocate in Boston, was stabbed multiple times as she walked her dog in Franklin Park. She was discharged from a hospital Tuesday.

Jeremiah Manion of the Globe staff contributed to this report.