Two more things:
1. I just noticed in Hunt the Devil, I chose to help Karlach, and it has marked Kill the Devil as the completed part, but still says Karlach should be pleased. I have also gone and spoken to her since then and told her that Anders is dead, and it is still marked to go tell her.
2. Auntie Ethel appeared in her lair, but then did not become engaged in combat, so I just hacked her down.