A woman who stabbed her tied-up lover so she could drink his blood has been sentenced to 10 years in prison. Tiffany Sutton told Maricopa County Superior Court Judge David Udall that she was sorry for the incident and said she never meant to hurt anyone, but received the stiff sentence anyway after he called the crime especially heinous. Sutton, 24, pleaded guilty to aggravated assault in August. She was arrested by Tempe police in February after she repeatedly stabbed her lover during an alcohol- and drug-fueled sexual tryst. According to police reports, the victim, 46-year-old Robert McDaniel, agreed to be tied up during sex but became alarmed and asked to be untied when Sutton pulled out a knife and said she liked to drink blood. Sutton then attacked him, slicing his leg, puncturing his arm, shoulder and back and cutting his neck and stomach. When he escaped, she chased him with a pickax.

Sutton's attorney, Elizabeth Houck, told the judge at Tuesday's hearing that she suffers from a personality disorder that causes instability and has taken responsibility for her actions, according to the East Valley Tribune.

Houck wrote in a sentencing memo that prison records show Sutton thought she was a vampire for the first several weeks she was in jail.

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Information from: East Valley Tribune/Scottsdale Tribune, http://www.eastvalleytribune.com