If you're making yourself vulnerable in your writing, then they know where to hurt you, which is extra fun. I had to develop coping mechanisms on the fly, and slowly it got better, to the point where now I barely notice. I'm like an old, gnarly turtle now. The interaction with the troll who impersonated my dad made me start to understand who these people are, and I figured out, in a really profound way, that happy people don't do this. It's hard to feel afraid of someone when you pity them.