Does this girl like me?

So this pretty, petite Latina chick works at taco bell and the first time she took my order I didn't notice anything unusual but when she served my food she was grinning and as I was walking back to my table to eat she called me back and was rambling a few words. I believed she was flirting with me but I was so shocked for the moment I couldn't comprehend what she was saying. So I was skeptical for a few weeks until I came back to the restaurant for a few days and the same girl was staring at me. I was more eager because of that, but it didn't confirm my suspicion until one day she faked the order call and signaled me to take the free frutista freeze she was offering (though my clumsy self almost got her in trouble as I didn't want to look like a dweeb thinking that the drink was intended for me, causing odd stares among her coworkers). Do you people think she likes me? If you agree, what are some of the things I can do to flirt casually back in the awkward setting of a fast-food eatery? Oh I'm a male obviously and a muscular build and tall if it helps.