Did i do something wrong?

There is this girl that i like, when we met we talked and had a good connection, i told her that i liked her, but she said that she didnt really want a relationship now. So i backed off, later on we spoke more and more and talked practically everyday. Later down the line we stopped talking for like weeks, and every once in awhile we would talk. She lives about 100 miles away from me, and there is this church service that we go to about once a month. So when i would see her after not talking all that much we would hang out and it would be cool. As time passed she was telling me personal things about herself and was asking me for my advice on different things. I started to see a connection and i got a comfortability with her. She was even wondeing at one point why i was being so distant when we would not talk for awhile. She was to be married, but called it off back in august, the guy didnt cheat on her, but he did other stuff that was not right. She has felt really bad about having to call it off and was even missing the guy and felt really lonely. There was a period where she was going through some things with him after the break up where he was being uncooperative on certain things. Well now she has been moving on, she mentioned that she has trust issues with her dad, we had planned for me to go out there and see her and hangout, prior to that day happening, she was texting me telling me she was excited that i was coming down because she will be able to spend some time with me. I told her i felt the same way, she was even going on line to pick out things for us to do .i went out there met her entire family and had a good time, and we planned to hang out on in 2 weeks. She even said it would be cool for me to come down at least once a month. The next day i texted her to let her know i got home safe and that i had a great time, she texted me back to tell me she had a great time to and that she was looking forward to out next hang out. Then she text me saying she missed me and to come back to see her, i said back to her that i miss her too and i will be there soon. Didnt hear back from her for the rest of the day, i figured she was busy so i left it. The next day i didtn text her or anything, i didnt want to show her that i was being to eager. Then the next day her tone seemed pretty different, she was just asking me about something and i answered her, we spoke a litle through texting, and then she didnt get back to me for the rest of the day, i then texted her goodnight and she texted me back telling me she was sorry she didnt get back to me until now, and told me what she was occupied with and told me good night. Then i called her the next day and we spoke a little, after that there was no contact at all the next day until the day after that where she asked me a question, i answered it, and i didnt hear back from her, i left it and didnt say anything else, the next day, i didnt hear from her at all. So yesterday i texted her and she got back like 7 hours later, we spoke a little, and she even invited me to call her. I did but one of her other friends called her and she told me she will call me back after she was done. I told her ok, and that if i dont answer its because im on the train and for her to leave me a message..It was getting late so she texted me to tell me she was going to bed and that she would try to catch up with me sometime this week. So im wondering if i did anything wrong, or if you see a change in the way she is acting now, im like why would you go to saying you miss me to ill try to catch up with you sometime this week. And thats if i even hear from her, i know she is not that busy at all, shes bored where she is living at.