MIAMI (CBS4) – Family and friends marked the one year anniversary of Kaely Camacho’s death on Saturday.

The 13-year old was killed by an alleged drunk driver April 13, 2012.

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Kaely’s sister Bree Ann Camacho sang at her sister’s grave and friends released butterflies from blue envelopes.

“It doesn’t even feel like a year, it feels like it was just last week. It’s gone by so fast,” said Kaely’s mother Angie Camacho.

One year ago, Bree Ann and Kaely were on their way to school with their dad, when police say Sandor Guillen was reportedly driving drunk about 100 miles an hour in the busway at SW 184th Street and U.S.1. and slammed into the family’s minivan killing Kaely.

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Guillen pleaded not guilty to DUI manslaughter, vehicular homicide and leaving the scene of an accident.

On this first anniversary of Kaely’s death, her sister Bree Ann attended her prom. She wore a blue dress, her sister’s favorite color, and spread an important message to her classmates.

“Please don’t get behind a vehicle if you’re not sober because you can take someone’s life like Kaely’s,” she said.

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While she didn’t win prom queen, Bree Ann said she helped spread the message about the consequences of drinking and driving.