A memorial march was held Sunday in Tarrytown on what would have been a college student's 20th birthday.

Friends, relatives and community members gathered in a park on the border between Tarrytown and Sleepy Hollow to remember Jessica Santos. She was killed last August in a Yonkers drive-by shooting. A trial is underway for her accused killer, Anthony Burton.

Participants said the event was about remembering her life, not her death. "She loved to kid around, always had a smile on her face, very caring," said friend Viviana Martins, who wore a T-shirt with Santos' image.

Santos' mother, Gisela Marin, organized the march through downtown Tarrytown. It ended in Pierson Park on the waterfront, where a tree dedicated to Jessica is planted. Butterflies, one for each year of the victim's life, were released.

"For a brief moment, its glory and beauty belongs to our world, but then it flies on again and although we wish it could have stayed, we feel blessed to have seen it," Marin said, comparing the butterflies to her daughter.

The march collected about $2,000 toward scholarships in Jessica's name.