Office was shot and killed Friday night when someone fired a dozen rounds into a crowd gathered outside a party in Sacramento's Del Paso Heights neighborhood, police said.
Mourners gathered Saturday at the scene of the shooting to construct a memorial and share their memories of Office.
Friends and family described Office as a good student who was going to go far. They said she'd already won several scholarships and had been admitted to at least three colleges.
"She wanted so much out of life," said her friend Keynna Murry. "Smart girl, she had a good head on her shoulders."
Office's death came as she prepared for her junior prom. She already had the dress she planned to wear.
Now, her family said, she'll be buried in it.