Police said it happened around 3 p.m. Thursday at a home on Pine Drive near 120th Avenue in Holland Township. The victim told Ottawa County deputies that a masked man with a medium build and dressed in black broke into her home, then assaulted her. She said he left the house a short time later.
Deputies and a police dog were unable to find any sign of the man during a search of the area.
The victim was treated at Holland Hospital.
Anyone with information on the crime is asked to call the Ottawa County Sheriff's Department or Silent Observer at 877-88-SILENT.