I once had a stalker on a sports website. I complained to the management; they took cosmetic measures (suspension, banning, but not by IP)…and he continued to harass me beyond belief.
I’m not one to cede ground to someone like that, but it was really getting to me. Finally, I found and publicly quoted the federal law about internet stalking, and within minutes, it was all over.
Maybe that’s all she’s doing here. Calling their bluff.