Watchingout - it sounds like you're dealing with the very same OW that I am!!! What is it with these creatures??? On the other hand, for me, I'm hoping beyond hope that I run into one of her "dear friends" so that I can blab. I have proof on my phone to back it up... Otherwise, I wouldn't bother.
Overall though, I'm much like you where I'm too tired to deal and the OW isn't worth the energy.
Besides, she thrives on drama and being the center of attention. Why should we waste our precious energy on that and give them what they want?? They'll get what's coming to them. Sooner or later.