Witnesses say the victim went outside when she heard a commotion, and got shot.
A 14-year-old boy was also shot in the leg. He was taken to Kings County Hospital in stable condition.
Another 25-year-old man was assaulted at the scene. He suffered a cut to his head.
He was taken to the police precinct where he is reportedly "not cooperative" to police.
A friend of the victim said, "I'm sad and deeply hurt. She's a long-time family member, extended family member, and my condolences go out to the family right now."
Other friends of the victim say that she was very active in the community.
So far, no arrests have been made.