Is that the only time it happened? There's always a rational explanation. I would also bring up memory decay. Human memory is astoundingly unreliable. Memories conjoin with other memories to create entirely different ones. Memories might be entirely made up, at times. And yes, I will provide a legitimate source for that claim if you really need one.
You might have just noticed a few things that were similar. Or, you might have a bias and want it to be true, so convince yourself that it is true. Or, and this is probably most likely, you might have had a dream that you went to her house and believed that it was real, that you actually visited her house. I believed that I had gone to school in nothing but my underwear until 5th grade. My parents swore it didn't happen. It was just a really realistic dream.
Just recently, I dreamed that I looked outside my window and it was dark and thought I must have overslept big time. I woke up confused for like 2 minutes, because there was light outside my window. Much less if this is something that happened to you years and years ago, in which case we also have to add memory degradation and amalgamation to the possibility.
Unless it's studied in a scientific environment and can be done over and over and over again with the same results, it is not fact. In short, it doesn't matter what you say happened, I would have to see it for myself and repeat it over and over again to believe it was true.