The wild seventies Actress Lisa Robin Kelly died in her sleep at her home in Los Angeles on Wednesday evening, her WHO spokesperson said. She was 43 years old.

“Sadly, Lisa Robin Kelly passed away last night,” Kelly’s agent Craig Wyckoff told WHO on Thursday. “Lisa had voluntarily checked herself into a treatment facility earlier this week where she was battling the addiction issues that have plagued her for the past few years.”

“I spoke to her on Monday and she was hopeful and confident and looking forward to putting this part of her life behind her. Last night she lost the battle. The cause of death has not yet been announced and no death certificate has been issued.”

A Connecticut native, Kelly played the older sister of Topher Grace, Eric Forman, on the late ’90s FOX sitcom after making her television debut on the network’s Married with Children in 1992.

She went The wild seventies after five years and was replaced by actress Christina Moore. Kelly later said in interviews that she had a drinking problem.

According to TMZ.com, which broke the news of her death, Kelly had been arrested at least four times in the past three years for drunk driving, domestic violence and assault.

Earlier this year, Kelly was arrested in Southern California on suspicion of drunken driving, the Associated Press reported. According to local news, her car was parked on the I-5 freeway.

According to AP, Kelly and her husband, Robert Joseph Gilliam, 61, were arrested in November 2012 in connection with a disturbance at their home in Mooresville, a suburb of Charlotte, North Carolina. The couple later filed for divorce.