It happened around 5 o'clock yesterday evening at the Sonic in the 41-hundred block of Jacksboro Hwy.
The employee says a customer in a car pointed a black gun at her and demanded all her money.
The carhop says she noticed an orange tip on the gun signifying it was a toy, so she went back inside the business, and the customer drove off.
Police are looking for a middle-aged white female.
She's heavy set, has dark hair, and was wearing a blue shirt.
She was driving an older model black Ford Explorer with a partial license tag of BP3.
Officers say she didn't get away with any money, but stole the food she ordered.
If you have information about this incident, call Crime Stoppers at 322-9888.
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