Shes lying to me what to do?

i dont know what to do about this girl, we had our fights and we made up, but now i noticed that if we talk on msn, she'll say "brb" and then i look on her facebook and her status and stuff are getting updated :/ i wait 20 minutes and still nothing from her but theres stuff on facebook, she removed me on facebook to "test" somethin out and says she cant readd me she'll try tomorrow :/ (i call bs), she also use to wake up me up and talk to me in the morning but now she just woke me up and wont respond to any texts.... what should i do about this girl, seems like shes lying what do u guys think?