Why is she acting like this?

First off a girl liked me who I met one of the first weeks of school in college. We really connected and she took the initiative to get my number from a friend and text me later that night. we texted back and forth for an hour our 2. the next day I asked her what she was doing and she said nothing you should come over. For the record this girl isn't a slutty type she's extremly smart and hasn't had a boyfriend for a while its obvious by how she interacts with me, and other boys also she doesn't drink or smoke. so I go to her dorm and we stay up talking for like 3-4 hours. We then see each other everyday after this for a week and a half spending time talking for nearly 3-4 hours each night. its obvious that she is really liking me and I like her. she tells her family and friends about me. Then out the blue she starts talking to one of my close friends and tells him I'm taking to long to make a move and she's trying real hard to make sure I know she likes me maybe she feels like she's putting herself out there to much. I understand that. So I ask her numerous times to hang out after my friend alerts me of this so I can tell her I feel the same way she does. She for the first time says No to all my attempts and says she's been having a really stressful week but we will hang out sometime. I'm hurt so I wait a couple days to see if she texts me and arranges a time for us to hang out, She doesnt. So I tell her we need to talk. She says ok and meets me we take a walk and its like when we first met I can still tell she likes me by how she acts around me. During the walk I let her know how I feel about her and that I like her a lot she says she feels the same way. I also tell her that my friend told me all about what she had told him about the fact that I was taking to long to make a move, she says that she was just babaling that day don't take what she said seriously. So I take it for what its worth and am forced to cut our meeting short to go to a party. Over the next week I notice a HUGE change in her interaction with me. She won't say hi, won't have long discussions with me won't hang out and everything is always akward. Basically I have to initiate everything she no longer will. I tried for a week to just forget about her but I can't because I really like her. I just don't understand why she no longer talks to me, calls me, or anything even though we both mutually liked eachother. She still might like me to be honest I'm not sure because she acts so distant around me. Usually its not hard for me to move on, but I really like this girl alot. I can't get her off my mind even when I'm hooking up with other girls. What Happend? Why is she acting like this? What Should I Do? Please give me some honest advice
Why is she acting like this?
Post Opinion