(KMOV) -- A St. Charles County woman was arrested at a McDonald's on Highway 94 after leaving her children, ages 4 and 2, in a play area while she took heroin in the bathroom on Tuesday.
According to police, Kelli Horton, 36, was charged with a possession of a controlled substance and unlawful use of drug paraphernalia.
St. Charles County Sheriff's Department said Horton took her children to buy heroin in St. Louis, then drove to the McDonald's.
Police said Horton left her children in a play area while she ingested two capsules of heroin in the bathroom.
Police were notified after Horton came out of the bathroom appearing to be delusional and unsteady on her feet.
Horton had several used heroin capsules, two syringes and two spoons with suspected heroin residue.
The children were taken into protective custody. Prosecutors could consider adding other charges.