the scrying elf aprreciating being freed from the Hag's influence, the petrified dwarf being relieved that he's not dead with additional dialogue for arcane/medicine, the mask-wearing individuals engagin in conversation (one of them reacts well to the hag's death and will travel to BG, two potentially attack you when speaking to them).
I have not yet seen any further interaction wtih the creature locked in the mirror or the lady with her head in her hands.
