A 26-year-old Seattle woman was charged Friday with vehicular homicide after allegedly hitting and killing a husband and wife with her car in Burien this week, according to the King County Prosecuting Attorney’s Office.

Prosecutors charged Irene Plancarte-Bustos with two counts of vehicular homicide, felony hit-and-run, attended vehicle hit-and-run and reckless driving. She is being held on $250,000 bail.

According to the charges, Plancarte-Bustos was speeding in a white Toyota Camry, heading north on Ambaum Boulevard Southwest on Tuesday afternoon when she side-swiped a car, scraping its paint and hitting the driver’s side mirror, before continuing north. Her 3-year-old son was in the Camry with her, prosecutors said.

She was going 56 mph in a 35 mph zone, according to the charges.

After she hit the first car, prosecutors say Plancarte-Bustos continued driving and slammed into a Toyota Yaris, which spun counterclockwise into a southbound lane where it was T-boned by a Dodge Ram pickup. The couple inside the Yaris — Lauren Dupuis-Perez, 35, and Kamel Dupuis-Perez, 38 — died almost instantly, prosecutors said.

The King County Medical Examiner’s Office has since determined the couple died from multiple blunt force injuries and ruled their deaths accidents.

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They leave behind two children, who attend the St. Joseph School in Seattle’s Capitol Hill neighborhood, according to a GoFundMe page launched in their name.

The driver of the pickup that hit the Yaris when it spun out of control suffered injuries that were not life-threatening, the charges say. Witnesses said she was “driving normally and slammed on her brakes, but was unable to avoid the collision,” according to the charges.

Plancarte-Bustos drove a couple more blocks before pulling into a mini-mart parking lot, and did not try to contact police, the charges say.

When police found her at the mini-mart, they said she showed “several signs of intoxication,” according to the charges, and though she initially said she hadn’t been drinking, she later told police she’d had a Four Loko — which officers later found in the passenger seat area. When they asked her what caused the collisions, she told them she was in a rush, prosecutors said.

Blood toxicology results are pending.

Plancarte-Bustos’ son, who was in a car seat during the collisions, was not injured and is currently with a relative.

Plancarte-Bustos is scheduled to be arraigned April 22 at the Maleng Regional Justice Center in Kent.