DENVER -- A Denver foster mother faced charges of child abuse Friday after a 15-year-old developmentally disabled girl was found bound in a closet by a social worker.

Yaland R. Royal, 37, was issued a criminal summons and complaint in the case and will be arraigned on the charge Aug. 11, according to the Denver District Attorney's Office.

According to investigators, the teenager was found last month in the basement closet of Royal's home with a sock stuffed in her mouth.

The girl had been placed backward into a pair of footed-pajamas and her arms were bound to her body with a T-shirt, sweat pants, shirt and panty hose, according to a search warrant. The document said she also had nylon material around her neck.

A Jefferson County caseworker inspecting the home June 11 found the teenager in the locked closet after others in the house told her that the girl was in the basement.

The girl was found kneeling in the closet with the lights off and the door closed, police said. She appeared nourished and healthy.