A Wisconsin teenager involved in the infamous "Slender Man" attempted murder case has been sentenced to 25 years in a mental hospital.
Anissa Weier, 16, pleaded guilty to attempted second-degree intentional homicide in the 2014 stabbing of Payton Leutner in August, the Daily Mail reported. She accompanied Morgan Geyser in the crime.
All three girls were 12 years old at the time. Anissa and Morgan lured Payton to a wooded area, where Morgan stabbed Payton 19 times while Anissa urged her on, investigators said. Payton managed to survive the attack, and was found by cyclists after crawling out of the woods.
Anissa and Morgan told authorities they stabbed Payton to become "proxies" for the fictitious character known as "Slender Man." They said they also stabbed Payton to protect their families from Slender Man.
Anissa maintained that she was mentally ill, and the jury agreed in September.
Waukesha County Circuit Judge Michael Bohren sentenced Anissa to 25 years in a psychiatric institution, with time starting from the date of the crime. She will be in the institution until she is 37 years old.
"I do hold myself accountable for this and ... I will do whatever I have to do to make sure I don't get any sort of delusion or whatever again," Anissa told the judge before her sentencing. "I want everybody involved to know I deeply regret everything that happened that day. I know that nothing I say is going to make this right and nothing I say is going to fix what I broke."
"Considering the nature and gravity of this offense, being supervised until the age of 37 is not all that long... in terms of the fact that Payton is looking at a lifetime of scars, physical scars and psychological scarring," Prosecutor Kevin Osborne said.
Prior to the sentencing, Payton's mother, Stacie Leutner, wrote a letter to the judge detailing how the crime has affected her daughter over time. She said Payton sleeps with scissors underneath her pillow for protection, and locks her windows at night.
"She will struggle with the events of that day and physical and emotional scars it left for the rest of her life," Stacie wrote. "Payton has a lifetime of healing ahead of her and she deserves to be allowed to heal in an environment where she feels safe."
Anissa will be eligible for release after serving three years at the mental health facility, if doctors deem she is ready for outpatient care, CNN reported. Attorney Maura McMahon hopes Anissa will be out by July 2020.