Old School Friend Issues With Whatsapp

Am not a frequent user on whatsapp but use it for calling family .. friends we just exchange messages no calls .. I have blocked her .. on all social media .. she started messaging me directly on messages asking why you blocked me ( I don’t get her point she is the one who first blocked me as am not responding immediately next sec ..) then she put in do not disturb mode .. what the hell she thinks I don’t understand when she is not ready to listen my ans .. anyways she is waste of my time .. I can put this energy in something else ..