Who is she when she leaves my apartment?

I (26M) have been hooking up with this girl (22F) for a while now, probably like 15 times. It started casual but it doesn’t feel casual anymore, at least not for me. I don’t know how to describe it but… she’s different

First of all she’s literally a 9 or 10 out of 10. Easily one of the prettiest girls I’ve ever seen in my life. I’m not just saying that. She was signed to a modeling agency. Her face, her body, the way she carries herself everything is perfect

But she doesn’t act like most girls I’ve met who look like that. She doesn’t have social media. She doesn’t post thirst traps. She’s not trying to be seen. It’s like she’s hidden on purpose. And that almost makes her more dangerous

When we’re together we don’t just have sex. We cuddle, we make out, flirt, she’ll call me cute names, she’ll lay on me, rub my arms, I’ll rub her thighs… it’s intimate without ever being talked about. It’s like everything’s felt, never said

She never asks me emotional questions. She never tells me how she feels. She never even texts first. But when I text and ask to see her she always says “sure” and comes over. It’s always a good time. It’s never awkward

But I feel like I’m opening up more than her. I’ve told her things I don’t usually tell anyone. And it’s weird because she makes me feel comfortable even though she doesn’t say much. She doesn’t ask for vulnerability. It just comes out when I’m around her

And here’s where it gets in my head

I know she’s hiding something. Not like a boyfriend or anything like that secrets. Not even bad ones necessarily… just, unspoken stuff.

She’s emotionally detached but not cold. She’s affectionate when we’re in person. And the sex? Intense. But afterward she just goes quiet again. Like nothing happened. Like she’s fine not seeing me for days

And I’m not fine

I’ll be honest. She’s in my head. I think about her a lot. I compare other girls to her and it’s not even close

So here’s my question

What am I dealing with? Is she just emotionally unavailable? Or does she care and just refuses to show it?