Girl's Behavior

I'm somewhat confused about this girl?

told a customer who card decline, "I don't care I was already making your drink", when I handed it too her, she was happy af, she took the drink, she then sat down, with her friend. She sat down at a seat, hours later. She gets up with her friend, goes to the counter and tells me, "I hope I have a great day I loved the drink by the way". I was like "you too as well", with a smile, she then leaves. So ever since that day she's been passing by the bean and waving at me, For like a week. Like 2 days ago, I did not notice she was by the window waiting for me to acknowledge her, I was busy taking an order from a customer. As soon as I was done taking that person's order I look up she then waved at me, I then waved at her to come in. So she comes into the store and sits by the cash register, were talking she starts talking about her roommates and shii, she kept saying she's in the city for a couple of weeks then she's leaving, I asked her what does she do, she told me, she asked me the same question what I do outside of my cafe job, I told her I design clothes, she was happy, she goes " I always wanted to be a model, but I'm too short", I then told her I have clothes that fit all, she told me maybe 1 day once when your done with your clothes I can model for you" I slide her my phone to add me on Instagram we add each other, it then got busy, I told her sorry it's just extremely busy.. she was understanding just chilling In the seat watching me. Which I didn't give a fuck about. I then told my manager to stay in the store while I head out to go to a store. He called me over the phone while I was talking to her, while he was in the store, he asked if I knew her. I was like not really, then I left the store , to buy something, I told her I would be coming back, she goes "should I come with you?", I told her it was fine I'll be back", she then says "okay I'll be waiting".

Updates
1 y
Continuing the story..

He called me again while I was out the store for a short break. He said that she was following me to the store I was headed to. I was like okay. While I was on my phone I felt a presense right behind me. I turn it was her she then tells me I'm leaving, I was like "okay", then I reached in for a hug, she hugs me back then leaves, when I returned back to the store my manager told me he kicked her out because she had an outside drink, that was not allowed at the store.
I'm somewhat confused about this girl?
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