I sounds like this caregiver is abusive and the facility should be liable if this is premitted to continue after the owner was aware of potenial problems. Suggest you contact your state's licensing agency. They would pay them a visit and make them aware of violations.
https://www.daycare.com/minnesota/
Child Care Licensing Agency
Minnesota Department of Human Services
Division of Licensing
444 Lafayette Road North
St. Paul, MN 55155-3842
Phone: (651) 296-3971
Fax: (651) 297-1490
Child Abuse Reporting
To report suspected child abuse in Minnesota, call county law enforcement office or any county Department of Human Services.
For national child abuse information, call Childhelp®, 800-4-A-CHILD (800-422-4453), or your local CPS agency