The 63-year-old was inside her home in the 2000 block of Horizon Court, in the Misty Ridge apartment complex, when she heard her sliding glass door open at 10:05 p.m., and then saw a man come into her home, say police.
The man pulled out a handgun and demanded money, but the woman fought back and struck the man on the head with the gun, said Prince William police spokesman Jonathan Perok.