Met a gal online, after we F close on our date, she wants a 'parting gift'

I met this hot woman online, she's a 8.5-9, after a few weeks of texting and chatting, she agrees to meet me for drinks one night. Well, right away she is very friendly, frisky, and ready to go. We have a few drinks, talk, and find out that we are very much into each other. I take her to a hotel room and we have some adult fun. I take her home because she took a cab to get to where I was.
Before we part, she asks for a 'Parting Gift' of money, wanting me to help pay for her mani-pedi the next day. Crap, after drinks and hotel ($200 easily) all I have left is like 25 bucks and I give it to her.
Thing is, she is always texting me, and wanting to hang out now. She is damned hot, and sexy, and I am glad to see her. But whenever we go out, she always asks for something at the end of our date. She's not a prostitute, but I feel like I am enabling her to be one. How can I get it across to her I don't want to keep giving her money for her attention any longer, and yet keep her as my FWB? She's turned into a great friend, and I want to keep her around.

She IS a prostitute, plain and simple. And a cheap one at that ($25 for a lay? Give me her #, I'll make the drive to Kentucky. LOL).

Just stop giving her stuff.