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When Sarah Flint first learned that a 14-year-old Mattapan boy had shot and killed his 9-year-old brother on Friday, she felt a familiar pang of grief.
“I was very upset, close to tears,’’ she said. “I just feel so badly for that family, especially that mother, knowing that she reached out for help and no one helped her.”
Flint’s own 15-year-old son was stabbed to death three decades ago in a fight with a 17-year-old boy over a new dirt bike she had bought her son for his birthday. Since then, she has built a career working to end violence, and Friday’s killing in Mattapan only intensified her efforts to help traumatized mothers and children in crisis.