Weld County Sheriff / . 1 / 6
Weld County Sheriff / . 1 / 6

Although the final scene of "Can't Buy Me Love" showed Amanda Peterson riding off into the sunset (on a lawnmower,) her actual life was far less romantic and far less perfect.

Amanda's life, it seems, was filled with personal demons, arrests and drugs. On July 5, the one-time golden actress was found dead in her Greeley, Colorado, home. Her cause of death has yet to be determined.

Amanda's mother, Silvia Peterson, insists that her daughter had been clean for some time and her death isn't related to drug use. "This was not, in any way, a drug thing," she told Entertainment Tonight.

But drugs did envelope her life in the past. People magazine revealed that the one-time crush of teenage boys everywhere had been arrested four times between 2000 and 2012, her most recent arrest coming in May 2012 from a DUI and possession of narcotic equipment.

A string of mugshots showed the actress entirely unrecognizable.

Silvia told People that she believes that her daughter's death may have been caused by sleep apnea, something she struggled with. She also spoke to the magazine about Amanda's final moments.

"She was in bed, and she'd had a wonderful day, and we were planning on a dinner the next day, so it was just a very, very big surprise," the grieving mother said, adding that she fondly remembers her daughter's big screen debut in "Annie".

"She was so great," she says. "She had a cute sense of humor and a love of history -- just a very, very cute person."

Clearly, though, Amanda's breakthrough came from playing Cindy Mancini in "Can't Buy Me Love." After hearing the news, Amanda's co-star Patrick Dempsey paid tribute to his on-screen love interest. "In my memory, she will always be vibrant and young. Gone too soon. Sending my thoughts and prayers to Amanda's family," he tweeted on July 7.

One of her friends echoed that sentiment. Ryan Hartsock became close with the actress after he photographed her in 2012.

"She had the greatest smile. I know it brightened her day when she got all the emails and fan mail from everybody," he says. "Really any time that we were together she was a kindhearted, great person."