^Angel, I think you care too much for what other people think. If they are (insert bad word which also means they enjoy gossiping over people), then they'll still find reasons to do it no matter what you do. For example, in this case they could just come up and say "she has deleted her posts on purpose in order to attract more attention using the realization that the posts which "started" this are now gone" or stuff like "by deleting them she plays the role of the victim etc. etc."
I don't presume to know the situation. Actually I have no idea. However, my point on this is that you're better off ignoring petty people like that whose only joy is messing with others. They are nothing without other people. And when being ignored they switch off to another victim. By quoting Death Note "they are the kind of people that should be purged" - if there is actually a reason to "purge" people. Bullies are just "criminals not against the law". And now I shut up.
Also I apologize if I intruded. It was not my intention, but I discussed something like this recently and it all came back to me.