I slept with a sex worker 3 years ago and they just contacted me the other day out of the blue

Obvious throw away account Uh... I met this person online. She was a sex worker. We spent 3 days together and she didn't charge me a dollar. We actually had a very good time. We went out to eat. Went shopping. Had breakfast lunch and dinner every day. It was almost like the full girlfriend experience but I did not ask for that. It just happened. She even bought me a gift and paid for our room in the hotel for 3 days. We went to a salon and got our hair cut. We did tons of shit together. We went clothes shopping and went out for lunch and it was pretty normal for such an abnormal situation. Again, I did not pay for this or ask for this. I was traveling for work and looking for drugs lol. I made it explicitly clear I did not want a "date" 3 years has passed and we haven't spoke. I never called her again. She never called me. And now all the sudden she's reaching out to me on a new phone number I have that I didn't give to anyone? What the hell? How am I supposed to take this? She actively searched me out. I mean we did seem to have some kind of connection I guess? We had fun and all that but God damn I'm a little spooked out here. Edit: my phone number is public with my name so it's not like I'm being stalked... Right?