I was going to suggest something like maybe a chile relleno
made with jalapenos instead of a larger pepper - until I went out and looked at the menu
for the Texas Roadhouse
to see what they offer that she might have gotten. The nearest thing that I could find on the menu (compared to what you described) is something they call Rattlesnake Bites
which are described as: "Rounds of diced jalapenos and jack cheese, hand battered and lightly fried. Served with Cajun Horseradish Sauce for dipping".
I'm kind of at a loss trying to reconstruct these without actually having tried them. But, maybe by having the description of the dish it might ring a bell for someone who has had a similar dish.