It does sound like she was using you for your money. I had someone do that to me one time (it was not a romantic thing, but she kept asking me for money, and I kept giving it to her because I felt sorry for her). She finally revealed her true colors when I told her I couldn't drive her wherever she wanted to go anymore (she's blind and can't drive). She got mad and texted me some hateful things and called me the C word. So I blocked her. I will never talk to her again. I know I won't get my money back (she's on disability and doesn't have much money) but a clean break can feel really good. I recommend you doing that.