[@Old Amsterdam][@thewizardguy], I'm counting three player Epics who could neutralize her before she can get close enough to touch them, at least two more characters are incredibly dangerous if she is close enough to touch them, and I have one monster already planned that cannot be pulled into the void. At least not completely.

I don't see how she could have taken out the Rat King alone, and that's the basic level of advanced (non-mook) monsters.

Trust me, you'll do fine.