According to court documents, 21-year-old Haley Smith was watching eight and 10-year-old girls late last year.
Both girls told police Smith gave them marijuana multiple times.
The incident was reported to Child Protective Services by a witness.
She faces charges of administering marijuana to a person under the age of 18 and unlawful delivery of a marijuana item.
Smith, who is in Jackson County Jail, pleaded not guilty to all charges in court Thursday afternoon.