Valerie Fairman – star of– has been found dead. She was 23-years-old. The cause of death is officially under investigation, although the former reality star - who has a seven-year-old daughter named Nevaeh Lynn Fairman – has struggled with substance abuse for years, as was documented on the show.

Soon after the news broke, other MTV stars took to Twitter to remember Valerie, and pay tribute. "How incredibly sad. My heart goes out to her daughter and family," wrote 's Chelsea Houska. Co-star Jenelle Evans tweeted: "Oh my god. I just spoke to her a couple months ago and told her I'm proud of her and looks like she's doing good... Don't take life for granted. Hold your children and love them close."

star Valerie Fairman has sadly died at the age of 23

A spokesperson for MTV said in a statement: "We are saddened by the news of Valerie Fairman's passing. Our thoughts and prayers are with her family at this time."

Valerie starred on the second season of – the series that eventually inspired and – in 2010, which documented the birth of daughter Nevaeh. The little girl is currently with her grandmother.

Celebrity deaths in 2016: Famous faces gone too soon

Valerie had a number of run-ins with the law in the past. She was arrested in 2015, and a week before her death was again arrested for resisting arrest and giving false identification to the police.

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