Rivals Zombies help please

Y'all. Sometimes Wanda (Queen of the dead) randomly 1 shots me, it's always with her "swipe" ability, or I randomly die to a stun ball, this is on any character, I was on Jeff earlier with 8k health, and HAD to be 50+ damage reduction and she randomly decided to come shot me the entire fight on wave 20/20 with the two of her. I have DOZENS of hours in this game mode and know how to kite her stubs, yet I'll die randomly when she isn't even attacking me and there isn't even a stun on me. Earlier I finally had a run that I could win in (this is all nightmare 4) btw. But as a blade with 10k HP and DR I kept getting one shot. It feels like a bug as sometimes it won't happen to me and I can face tank Wanda or both Wanda's without ever losing a drop of health. But other runs I randomly can't get out of a death loop.

Side note, please stop kiting Wanda's stuns near spawn. Thank you.