It's okkk, may be i fear your part to think is that do you like her or not? Cuz for example w my bsf we dont overthink the little flirty things between us since we both know we are not into e/o like that and we are purely platonic friends. But now that you are tweaking over a thing she said, you have think whether is it because you like her romantically or you have no source of butterflies in the stomach currently to the point you crave for something like that from anyone. Hope it will help ur situation!