Family and friends gathered for a vigil in Selden Saturday night to remember Jenna Perez – a 17-year-old Newfield High School student who was fatally struck in a hit-and-run crash last weekend.

Police say 17-year-old Jenna Perez, of Selden, was crossing Route 347 about 300 feet west of Terryville Road in Port Jefferson Station when she was hit by a vehicle that was heading west. Police say the driver left the scene.

Donna Austin, Jenna's legal guardian, attended the vigil. She took in Jenna, her younger brother and her twin sister, Janelle.

MORE: Community mourns Newfield HS senior killed in hit-and-run | Police: 17-year-old girl killed in hit-and-run in Port Jefferson Station 

"Her twin sister, it's hard for her now because she's got to learn how to live without being a twin," says Austin.

The Selden community wore green and decorated the Newfield High School field with green balloons – Jenna’s favorite color.

Scott Graviano, the school’s principal, told News 12 that it’s a tightly knit community that will “do what they have to do to support and love each other.”

A memorial service will be held next month in Stony Brook.

No arrests have been made. Police are asking anyone with information about the case to call Crime Stoppers at 1-800-220-TIPS.