I need some advice please. Is my classmate using me?

I attend a university where we meet one night a week, and on another night or day you meet with a learning team. One of my group members has not ordered her books. We've already been in two classes and she still hasn't ordered any books. I let her make copies from one of the books one day. I was headed to the movies during that time, so she said she would hang around the area and finish making the copies herself so I wouldn't miss my movie. When I got done and met back up with her to get my book, she had copied 6 chapters from the book (the book only has 9 chapters), so that's basically the whole book. She has been bugging me to get copies from my other book, and it's wrecking my nerves. BUT HERE'S THE CATCH! She says she hasn't ordered the books because she doesn't have any money, but she has a HAIR APPOINTMENT every Friday morning. I mean every Friday morning (she never misses it). Also, literally every time I'm on the phone with her she's ordering food (at expensive restaurants). What is this? How can I get her off my back? Clearly she's a user?