Lisa Robin Kelly, who played Eric Forman’s older sister Laurie on “That ’70s Show,”  at age 43, passing away in her sleep Wednesday night at a rehab facility in California.

Kelly’s agent stated that the actress had just voluntarily checked herself in for treatment for an alcohol problem this past week and was determined to clean herself up.

“She had been fighting demons for a while and finally lost her battle,” stated Kelly’s agent.

Kelly had long struggled with alcohol, and was arrested at least four times in the past three years for DUI, spousal abuse and assault. She had been in and out of rehab centers hoping to kick her alcohol problem, but most recently fell off the wagon after a dispute with her estranged husband Robert Gilliam, who beat her last May to obtain residual money from her show. He was convicted of domestic battery last month and sentenced to three years probation and 35 days in jail

Lisa filed for divorce from Gilliam back in July. Her new boyfriend brought her to rehab again on Monday, but she went into cardiac arrest late Wednesday night and could not be saved.

(via TMZ)