I think that's a curious use of the word "harassment". I could understand you saying that Janet posting things you considered offensive as comments in your journal was harassment, but it seems to me that saying that her posting things in her journal about you is harassment is a difficult assertion to support; the defense "vicky doesn't have to read janet's LJ" appears quite convincing from here. If you considered it defamation then that would be a different ball-game entirely, but that doesn't seem to be the issue here.

Personally speaking, I'd rather people bitched about me in posts that I could read, but YMMV.