What women usually say are spur-of-the-moment thoughts and observations, and not meant to be analyzed or overthought. Analyzing what women say is a futile exercise, a pointless endeavor. We all have better stuff to do.
It shouldn't matter to you, then, whether it's true or not.
You know best how you are. So what? Be playful with such a comment. Ask some more.
Then, forget the comment and move on to the moment, which is what really matters.
You'll probably notice after some time how she'll make a comment completely opposite to anything you'd remember.
It's better to dwell on more important things in your life.