A California mother of four made a very fortunate mistake last month when she accidentally purchased a winning lottery ticket at her local CVS.

Thuan Le, a single parent from Santa Ana, was at a Mission Viejo CVS, picking up her weekly stack of lotto tickets: Four powerball tickets and one SuperLotto Plus.

Distracted momentarily, Le accidentally put $6 into the self-service terminal instead of the necessary $5.

Noticing the extra $1 in her favor, Le thought, "I might as well get another SuperLotto Plus ticket."

According to state lottery officials, it was that sixth ticket that won Le the $14 million jackpot.

"We thought she was joking," said one of Le's four sons, referring to his mom's announcement that she had won the SuperLotto Plus drawing. "But we thought would she really joke like this? My older brother said, 'Yes, she would.'"

But it was true: Le had beaten the 1 in 42 million odds, and matched all six numbers.

Le says she plans to use her windfall to buy a house and visit her parents in Vietnam.

The CVS that sold Le her winning ticket will get to share in her joy with a $70,000 bonus courtesy of the California Lottery.

[H/T: The Sideshow, screengrab via Calottery]