Oklahoma girl breaks Girl Scout cookie sales mark

girl scout cookies
Money is collected as Girl Scouts sell cookies while a winter storm moves in on February 8, 2013 in New York City. The scouts did brisk business, setting up shop in locations around Midtown Manhattan on National Girl Scout Cookie Day. (Photo by John Moore/Getty Images)

OKLAHOMA CITY (AP) — An Oklahoma City girl who says she asks everyone she meets to buy Girl Scout cookies has broken the organization's decades-old sales record by a margin about the size of a Thin Mint.

Katie Francis of Oklahoma City sold 18,107 boxes in the seven-week sales period that ended Sunday night. The previous mark was set by Elizabeth Brinton, who sold approximately 18,000 one year in the 1980s.

The sixth-grade student told The Oklahoman newspaper last month that there were only three ingredients needed to rack up large sales: a lot of time, a lot of commitment and asking everyone she met to buy.

Katie sold 12,428 boxes last year.

Her troop receives a share of the proceeds from the fundraiser and intends to donate to breast cancer research.