Two hours before a 20-year-old Florida woman drove the wrong way on a Florida highway and killed two motorists in a car accident, she wrote on Twitter that she was "2 drunk 2 care."

According to CBS Miami, Kayla Maria Mendoza's 2004 Hyundai Sonata was heading west in the eastbound lane on the Sawgrass Expressway early Sunday morning when she collided with Nicole Ferrante's 2012 Toyota Camry.

Ferrante's passenger, Marisa Caran Caronio, from Coral Springs, Fla., was pronounced dead at the scene. Ferrante died Thursday morning after being taken off life support, according to the Florida Highway Patrol.

Police are investigating the cause of the crash. Mendoza, who remains in critical condition at an area hospital, spoke frequently about alcohol and drug use on her Twitter feed at @highimkaila and described herself in a short biography as a "pothead princess." She had also posted a picture that said, "Drugs and alcohol is (sic) not the answer. Unless you're asking what I'm doing this weekend."

Drunk drivers claimed 10,322 lives in 2012, the latest year for which statistics are available. That marked a 4.6 percent increase from the 9,865 deaths in 2011. The majority of those cases involved drivers who had a blood-alcohol concentration of .15 or higher, according to the National Highway Traffic Safety Administration.