<human>: So first of all I met this girl at my Basic Training for the Army. We talked a lot there for about 7 weeks. We became REALLY close. We always laughed and talked a lot because we have so many things in common. We never talked to each other about whether we liked each other or not because there's a rule where technically we're not supposed to have relationships in early training of the Army. 

So the last few days before we graduated she started avoiding me a little; staying away from me and not talking as much. So we left the base without saying goodbye and went to different bases for our next stage of training. (Few states apart)

After 3 weeks of settling in I decided to text her. She was really excited to talk to me and happy to hear from me so we talked on the phone. On the phone she admitted that she liked me back when we were in Basic Training. She said she tried to hide it because she thought I thought she was "too easy". I told that I actually liked her back and we briefly talked about that subject. 
Ever since that call she's been very quiet with me. She doesn't seem as talkative and excited to talk to me again. It's gotten me confused if it's actually something I didn't do. 

Why would she admit to liking me and then turn around and be sort of quiet with me? 
Could she have wanted me to ask her out and upset that I didn't? 
Should I even bring up the conversation again to talk deeper into the subject? 
Even if distance is a problem why would she even admit to liking me? 
Could she not have even expected me to like her back?
Just a little lost on what to do at this stage, any advice would be great!

Give me a shortened version of the text
<bot>: met girl and connected for 7 weeks. Went different ways. Texted her and she admitted she liked me. Told her I liked her back and now she's kind of quiet with me. What to do?