Mueller, 34, has been charged with one count of having more than four grams of cocaine on her and one count of having less than four grams. The charges stem from Mueller's Dec. 2 arrest in Aspen, Colo. She is also charged with assaulting a woman earlier that same evening.
If found guilty of possessing more than four grams, she would face up to six years in prison. If she's found guilty of having less than four grams, she could face a maximum of 18 months in prison. Following her Dec. 2 arrest, Mueller was receiving at-home treatment for her addiction, her rep told Us Weekly in December.
Mueller and Sheen were married in May 2008. She filed for divorce in November 2010, 11 months after Sheen was arrested for assaulting her in their Aspen, Colo. home. (He later plead guilty to misdemeanor assault). They have two-year-old twin sons together, Bob and Max.