The Wisconsin woman who stabbed a classmate nearly to death 11 years ago to please the fictional horror character Slender Man waived extradition from Illinois at a brief court appearance on Tuesday, after escaping from a group home over the weekend.

Morgan Geyser, now 23, appeared at the George N. Leighton Cook County Criminal Courthouse for an extradition hearing on sending her back to Dane County, Wisconsin.

Geyser's hearing lasted less than 10 minutes. She confirmed to a Cook County judge that she was voluntarily giving up her right to stay in Illinois and fight extradition. Wisconsin authorities can now pick her up and decide what to do next.

Once back in Wisconsin, Geyser likely will face criminal charges from her escape. The Dane County District Attorney said he's still waiting for Madison police to complete their investigation.

Geyser was captured in Chicago's south suburbs after cutting off a monitoring bracelet, leaving a group home and going missing, Madison, Wisconsin officials said late Sunday night.

The term "Slender Man" made national headlines repeatedly around 11 years ago when Geyser and another Wisconsin youngster stabbed their friend at a sleepover in Slender Man's honor.

In 2014, Geyser and her friend, Anissa Weier, lured Payton Leutner to a Waukesha park after a sleepover. Geyser stabbed Leutner 19 times while Weier egged her on. All three girls were 12 years old at the time.

Geyser and Weier fled after the attack but were arrested as they were walking on Interstate 94. They told investigators they attacked Leutner to earn the right to be Slender Man's servants and feared he would hurt their families if they didn't follow through. They had planned to walk to Slender Man's mansion in northern Wisconsin after the attack, they said.

Leutner barely survived. Geyser ultimately pleaded guilty to being a party to attempted first-degree intentional homicide in 2017 but claimed she wasn't responsible because she was mentally ill. The following year, Waukesha County Circuit Judge Michael Bohren committed her to a psychiatric hospital for 40 years.

This weekend, Geyser left the group home.

The Madison Police Department said Sunday that it wasn't made aware that Geyser was missing until nearly 12 hours after she left. The state Department of Corrections received an alert Saturday night that Geyser's ankle monitor had malfunctioned.

The department contacted the group home where she lived about two hours later and was told she wasn't there and had removed the bracelet, police said.

Wisconsin prosecutors said they feared a situation like this, which is why they opposed releasing Geyser from a mental institution and placing her in a group home.

"It's extremely concerning that you would so blatantly violate a very, very simple condition, which is to stay in a placement and keep a bracelet on; and that we have no idea what was going on is extremely concerning to the state, because immediately my thoughts went to the victim and keeping the community safe," Waukesha County Assistant District Attorney Abbey Nickolie said.

Nickolie said she will argue in favor of putting Geyser back in institutional care instead of a group home setting once Geyser is back in Wisconsin.  

Geyser was found this past weekend at a truck stop in the south Chicago suburb of Posen, Illinois, the Posen Police Department confirmed early Monday.

Geyser was found with a 42-year-old friend, who spoke to CBS News Chicago's Asal Rezaei after being released from police custody on a charge of obstruction for initially giving police a false identity. The friend, who declined to share their name, said they didn't want Geyser to be alone, so the two of them hopped on a bus from Madison to Chicago and eventually just started walking.

According to the friend, Geyser injured her foot during the trip and wasn't able to go on any longer, and they were detained at a truck stop after someone called the police on them for loitering.

Officers said they found Geyser and the companion sleeping on a sidewalk, and took them into custody after a lot of back-and-forth over Geyser's real name. Investigators allege that Geyser told them to Google her when they asked for ID.

As seen on body cam video, Geyser repeatedly told officer she "did something wrong" or "really wrong" when asked for her name.

"She seemed very nervous, and like I said, she made a spontaneous statement that she had done something bad, and that's why she didn't want to provide her correct name," said Posen police Chief William Alexander.

CBS News Chicago's cameras were rolling as Geyser was led outside the Posen police station in handcuffs to be taken to her initial detention hearing in Markham on Monday. She was held overnight at Cook County Jail ahead of her extradition heraing.