SAN ANTONIO (AP) — A teenager is receiving many happy returns after turning in an envelope she found stuffed with $100 bills.

Kayla Blackmon was sweeping the dining room floor after a rush of customers last week at Freddy's Frozen Custard & Steakburgers in San Antonio. She found the envelope on the floor with $1,600 inside.

The 17-year-old turned it over to restaurant managers who then checked video to determine which customer may have dropped it. Soon after a man walked in who "looked really nervous." He had intended to use the money for a Christmas vacation.

Blackmon told the San Antonio Express-News on Thursday (http://bit.ly/1caEUkF) that the customer expressed his gratitude by giving her $100. The restaurant owner, meanwhile, gave her a $100 gift card. She also was chosen employee of the month.

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Information from: San Antonio Express-News, http://www.mysanantonio.com

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