Girls does this mean she doesnt like me?

i added her on facebook, she accepted but then she blocked me from seeing her wall/photos, and then i asked if i can have her msn on facebook chat, she was more then happy to give it to me, so then we chatted around 6 times each time went four hours, but i just noticed out of the 6 times we chatted it was always i who start the conversation, if i don't start we don't chat, simple, does that mean she doesn't like me?