Feeling of uneasiness, no hard-fact circumstance

Today my husband and I briefly saw an acquaintance I have a lot of respect for, and with whom I normally feel a connection, like we like each other and have a sense of mutual recognition.

But today felt a little awkward and impersonal. On the surface she was friendly though, and the encounter lasted all of 2 minutes, so I can’t put my finger on a particular circumstance that would trigger this uneasiness. But the thought causing it was along the lines of “We don’t actually have a connection, I’m (we’re) not that special to her.”

How do you suggest handling this sort of fleeting, intuitive thought/feeling based on zero hard fact? This is something I’ve always been prone to, and I’m not seeing how to fit them into the model.

Thank you!