Interesting conundrum. If something was let slip during a meet, then it could have been accidentally. If you are going to see her again I'd just wait for her to say something similar and say something like "don't tell me, we don't actually know each other".
If you are not going to see her again, I'd leave it.id certainly be concerned that maybe she's just not a discrete person, and I try not to see people who are less than discrete.
I'm surprised by how many people are making out like you did something wrong just looking her up. I once found a working girls civvies Facebook page including facial photos and family connections because she had her full name in her email address which was on her AW account for some reason.
I had zero interest in stalking her, I just wondered exactly how far you can get with someone's full name and an idea of where they live... turns out a lot...
As a result I chose not to meet her. Mainly because the facial photos gave away a lot...