This means that she has no desire to communicate with you at this time. You haven't given a backstory, so the answer will be general. Blocking does not always mean a loss of interest or feelings. People can have an argument, there can be strong resentment over certain actions, etc. In that case, being put in a BS is simply a form of emotional expression. It is like leaving, slamming the door. But there is always a chance that the person will calm down and come back. What is going on specifically in your case is unclear, there is no information. But if there was no quarrel, and there was no relationship, then you can say that the girl is not interested in communication. Especially if you are too active.