Why would she do this and what does it mean?

[John Doe]

So I dated my first girlfriend for 7 months until she got it in her head I didn't trust her and broke up with me then went out with another guy a day later and by the end of the week were boyfriend/girlfriend. Well she had 3 exs before me all lasting less than a month and this guy didn't make it a month either. We started talking again a couple days ago and the first time we talked she was very rigid in staying broken up and didn't wanna talk to me. The next time she was still rigid, but we talked a lot longer and I told her how much I loved her and I'm pretty sure I convinced her that I did trust her and it was a misunderstanding, and also found out she still had feelings for me but wanted to move on (even though we really did have an amazing relationship and I always treated her well) but she said it was too late and I ended it with saying if she ever felt like talking than I would too. I also went to her house to get my sweatshirt and things went well with her dad (her whole family always loved me) and he kept telling me how she's really a good person and sounded kinda hopeful that we might get back together. But when we stopped talking to her I seriously didn't expect to hear from her again because of how tight up she sounded. But yesterday out of nowhere she texted and we made small talk for a couple hours and texted alot, but she still seemed a little uptight at times and then said she had to go and I saw on twitter a little while later she was complaining that someone never responds to her texts when she needs to ask something important. Did I get through to her and she's thinking about getting back together and is just testing the waters? Or is she really just talking to me as a friend because she was bored and this doesn't mean anything?