Judge James Isaacson ordered a $50,000 cash bond, calling it "an appropriate resolution", while adding that a lot would happen in the ensuing 48 hours in determining where the girl will be placed.
Police questioned one adult and three children who were at the daycare centre.
She was arrested an later admitted that she hurt the baby saying that she dropped him.
Deputies say the 10-year-old confessed to her involvement in a November 2 interview.
During her bond hearing, the girl in a "colorful striped skirt, a black hoodie and pink sneakers" was sobbing as the charges were described to her, the Star Tribune reported. The baby was 6 months old.
Chippewa County Sheriff's Sgt. Robert Jensen says Treu is being held on 13 possible charges, including four counts of homicide by intoxicated use of a vehicle. Police say he and his passenger, who is also in custody, said they'd been "huffing" or inhaling vapors from an aerosol cleaner before the crash, something prosecutors had argued in court.
The Girl Scout troop was picking up trash along a county highway Saturday morning when a driver veered out of his lane, crossed over the center line and ultimately drove into a ditch, said Lake Hallie police.
"This is a terrible reminder of our nations epidemic of self-indulging with substance abuse without regard of the consequences", Lake Hallie Police Chief Cal D. Smokowicz said in a statement Monday.
The girl's biological parents were with her in court.
Also Monday, authorities were prepared to release the identities of those killed in the crash late Saturday morning along County Road P near the Hwy. Therefore, McClatchy is not identifying the girl at this time.
Judy Schneider, the mother of Sara Jo Schneider and Haylee's grandmother, told The Associated Press in an interview Monday that after the crash she wondered, "What was the driver thinking?" He hit his head on a footstool and cried, the sheriff said.
Schneider said her daughter, granddaughter and grandson moved in with her a couple of years ago and they expected the house in the Town of Lafayette to be their "forever home". Girl Scouts sang songs in memory of the victims, who were members of Troop 3055.