The winner chose to hide her identity, and asked to be called "Happy Grandma."
"I usually buy the Crossword scratch-off, but something told me to try something different this time," said Happy Grandma.
She purchased a $30 Super Bonus scratch-off ticket at the BP Gas Station at 1 West St. Charles Road in Villa Park.
"It felt like divine intervention," she said.
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She revealed the $3 million prize when she got home.
"At first, I thought I'd just won my money back," she recalled. "But as I scratched more, I realized I had won the jackpot!"
For selling the winning ticket, the BP Gas Station will receive a bonus of $30,000.
"This season is going to be one for the books-full of celebrations and a few spa appointments," she said.