Authorities said a 23-year-old woman was arrested Tuesday night after a scuffle with a wheelchair-using 13-year-old boy at Texas Scottish Rite Hospital for Children.
The boy's uncle said he was trying to retrieve the ball, which he had purchased for the boy, from a bush on hospital grounds. Cline and her sister were also trying to get the ball.
The Dallas Morning News reported the boy had a pre-surgical medical halo screwed into his skull.
Cline swung twice at the boy, hitting his halo once, police said. It was not clear if she was trying to hit the boy or get the ball off his lap, the newspaper reported.
She is being held in the Dallas County jail on a $1,500 bond.