The (Sharon) Herald reports the incident happened Saturday afternoon at the woman's home, while the boys were visiting and asked to borrow cigarettes.
Sharon police Chief Mike Menster says the boys followed the 32-year-old woman into a basement bedroom when the boys attacked her and the older one raped the woman. Sharon is about 60 miles northwest of Pittsburgh, near the Ohio border.
Police say the victim's 8-year-old son saw the incident and alerted his grandmother, who called 911 and chased the boys away. Police say the woman later identified both boys.
The suspects' names aren't being released because they're charged in Mercer County Juvenile Court with conspiracy to commit rape and other crimes.
Information from: The Herald