If you enjoy having sex with her I'm not sure why you would preemptively end it. Some plates like the experience of dating in addition to sex. If you enjoy it also then continue to take her out.

You're not beta bucks for buying her a drink or even a meal if you like her. I'll take women out just to have a better memory of my time with them . . the ones where it was only sex tend to leave much less of an impression. And the money isn't really consequential for me. That said know what your limit is and stick to it, understanding that all plates break eventually and it's easier just to accept there is a time limit on the relationship and let it come.

Looking back, the problem is that I positioned myself as a provider.

I don't think you positioned yourself as a provider, but I think she has expectations that you'll buy her stuff.

She’s a student, and I paid for all the dates

This is bad. The best plan is to go equal on dates, but if she has no money to make them really cheap dates.

The problem with paying for dates is the low investment on her end, and the high investment at your end. This kills attraction and puts her in a "can't lose, try to get more" negotiating position.

and now she’s pushing for more.

I'm not certain this is the case from what you've said.

Other possibilities: she likes a plan. she likes to know what's happening. she isn't into surprises (some girls just aren't).

Suggestion: tell her that you're going to show her a really nice outdoor park that's special to you.

She does show some qualities for an LTR, but since it would be long-distance, I’m questioning if it’s worth it especially that she is hypersexual.

There is no such thing as a long distance relationship.

Long distance FWB - sure. but LDR just doesn't exist, so it doesn't matter how good she is for this.

So now I’m wondering: Should I see her one last time and close it properly,

What does "close it properly" mean?

or should I just walk away and consider this plate done (She is the only plate i sleep with i have now ,but i'm seeing other girls , scarcity...) ?

How about this.

Assume she is what you want (hot sex, doesn't need provisioning, likes to know the plan).

Treat her exactly like she is what you want. Tell her the plan, fuck her, don't pay.

If this works then great. If not then also great.

later mentioned she was “waiting for the surprise"

What do you mean?

you know, the one you mentioned

Do you mean you get it very often and it wasn't any kind of surprise? (lighthearted question with smile but keep waiting for an answer). You likely can ignore the answer.

As a bonus you can do something, call it your favourite thing and that no one knows about it only her and its special.

she sent me some sexy picture in the

Bait

Probably it was good to amuse mastery the pictures, not ONLY compliment

she’s pushing for more

Why wouldn't she. If she is not interested that much she want resources. But to be fair if she would be genuinely poor then offering her to cook meal from your ingredients (cooking with her)(make her help cooking) would be refunding her ticket.

Plates are by definition temporary

They either become your girlfriend or break

Relationships are an entirely different story for how long they can last

Classic mistake. Sex isn't a "surprise" for women. She can get sex from any old chump.

When you tell her you have a surprise for her, you better come up with something unique and interesting. Otherwise, don't say anything like that at all.

In terms of the relationship: all plates break sooner or later. This one seems salvageable, so I suggest keep it spinning longer. No need to drop her because of your silly mistake. Just keep doing what you're doing until she breaks herself.

"She" count = 17.

What about you?

Get her some chicken nuggets