Anissa Weier

Slender Man stabbing teen sentenced to mental institution, will be institutionalized until she’s 37

A teen was sentenced Thursday to 25 years in a mental institution after she and another teen stabbed a friend to appease the fictional character known as “Slender Man.”

CNN reports that Anissa Weier, now 16, pleaded guilty in August to helping carry out the “Slender Man stabbings” when she was 12 years old. She was charged with attempted second-degree intentional homicide. When she made her plea, she claimed that she was not responsible for her actions because of mental illness. A jury agreed with her in September.

On Thursday, Waukesha County Circuit Judge Michael Bohren sentenced the teen to 25 years in a mental institution, keeping her institutionalized until she reaches the age of 37.

The “Slender Man stabbings” occurred in 2014 in a Waukesha, Wisconsin, park. Weier and Morgan Geyser took their victim, Payton Leutner, into the woods and stabbed her 19 times in the name of the fictional character. The girls believed they were protecting their families from him. All three girls were 12 at the time.

Leutner, now 16, survived the attack, but her mother says she still suffers from physical and emotional scarring.

In a letter written to the court this week, Leutner’s mother, Stacie Leutner, told the judge that her daughter slept with scissors under her pillow for months because she was terrified for her life, and she still sleeps with her bedroom windows closed and locked.

“She will struggle with the events of that day and physical and emotional scars it left for the rest of her life.”

Weier’s attorney argued that she should not be institutionalized beyond the age of 25, while her family said in a video played to the court that she has “grown mentally and physically” and “knows what she did was wrong.”

The 16-year-old apologized herself at her sentencing hearing.

“I do hold myself accountable for this and that I will do whatever I have to do to make sure I don’t get any sort of delusion or whatever again. 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.”

Her accomplice, Geyser, who did the stabbing during the attack, pleaded guilty to first-degree intentional homicide by reason of mental illness. She is set to be sentenced in February, and prosecutors are asking that she be sentenced to at least 40 years in a mental institution.

[Feature Photo: Anissa Weier/AP/Rick Wood/Milwaukee Journal-Sentinel, Pool, File]