The player said she was browsing Facebook the next day when she saw a post from the Missouri Lottery saying a winning ticket had been purchased from Dino Mart.
"I was like, 'Surely that wasn't me,'" the player recalled.
The woman took her ticket to a store and handed it to a clerk, who confirmed it was the $50,000 winner.
"Holy cow! This was a big shock," the woman said.
The winning numbers from the drawing here 6-10-24-33-67, with the Powerball 11. The woman's ticket matched four of the numbers and the Powerball.