Between October 2000 and May 2012, Peterson was arrested five times for the offenses of third-degree assault, harassment, DUI, and possession of drug paraphernalia and suspicion of distributing a Schedule 2 controlled substance. From September to December 2005, she spent nearly three months in jail. Peterson's last arrests were for a misdemeanor DUI and possession of narcotics equipment charge in April 2012, and suspicion of child abuse in May 2012, which was later dropped. According to her father, she had previously struggled with drug issues, but was drug-free at the time of her death and had become "quite religious." He also said that, in recent years, Peterson had suffered from sleep apnea and bouts of pneumonia and sinusitis. For the last three years of her life, Peterson was receiving disability benefits and lived alone in an apartment in Greeley.