Posting here because socialskills sr wouldn't let me post

So I went to the Art Institute of Chicago, basically just being all touristy and such. I happened to noticed a woman by herself taking pictures and asked if she'd like me to take a picture of her in front of one of the exhibits. So, she declined, but then unprompted, started talking about some of the paintings. We had a great start to the conversation, and it lasted a while, and just basically got to know each other. However, as there's a lot to see there, eventually our conversation became less and less. I wasn't 100% sure, but I felt like maybe I was missing some social cues, like a deep breath or sigh before she responded to a question - this was later on. I mentioned that the only thing I believe I hadn't seen yet were the Picasso paintings. She showed me, and then asked if we had been to the architecture exhibit, and I said I believe we hadn't. Well, it feels like we are walking there, and the way the museum is set up, I think you have to cross the restrooms to get to the architecture exhibit (not 100%). So, she goes to use the bathroom, and being that we just met, I didn't want to feel all creeperish waiting outside the bathroom. In addition, historically, I feel like when a woman uses the bathroom either on a first date or first meeting, it's usually not a good sign. She also didn't tell me she was going. So, to me, I felt like that was communicating for me to go way. Anyway, I went to the next exhibit, and waited a little while, just in case she did come back, but she never did. That being said, she may have gone in the reverse direction back to a different exhibit, I'll never know.

One other note - I feel like she gave me a fake name, because she gave her first and last name, both of which were an extremely common first and last name, and giving out your last name on first meet is a little weird to me.

She was very sweet and very beautiful but I also try not to impose if I feel like a woman feels uncomfortable, and I'm not really sure if I did the right thing by leaving after she went to the restroom, as I'm afraid she might think I ditched her. Then again, she might have ditched me. What do y'all think?