Am I delulu or something is going on?

Good evening everyone, I’d love to get your opinion on how one of my coworkers is acting. We work in the same space at a museum.

Generally, whenever she sees me, she’s always smiling, super polite, and asks how I'm doing every single time. Sometimes I notice that when we’re talking, she holds really intense eye contact. When the conversation wraps up, she just stands there smiling and staring intently without saying anything else, almost like she’s waiting for me to keep the conversation going.

On top of that, she’s made a few comments. She told me that I have a great body. Another time, right in front of a colleague who was standing next to us, she said he is "surrounded by beautiful people." Also, when I change out of my work clothes, she pointed out that a specific shirt color really suits me. She even told me that when I started at my new post, the whole place lit up and that I totally eclipsed the guy who had the position before me.

I am 35 and she is probably 40, and as I know, she is single. I am very new to this position and I don't want to get exposed as I am working there almost for 1 month.

Is it all in my head, or is she actually giving off signs?