Girlfriend wont answer at all?

So my girlfriend and me usully see eachoth every day at school and text late at night an then school ended a month ago and i have texted her twice (both times i started) and hung out with her once. I sent her a message 2 weeks ago and she still hasnt answered on facebook ad she has been updateing her status so i know she has been on and i dont want to start another chat because i dont want to feel like im doing all the work so i comment on stuff she posts while she's kn and she replys so she knows im on but she never chats me. She hangs out with her friend like 24/7 witch im ok with but do you think she wants some space during summer with her friends or do you think she dosnt like me any more. (i know its not another guy because her "friend" likes me and if she cheated i would know imediatly. What do you guys think?