Death + subsequent Revivify doesn't work. Remove Curse isn't applicable - game says "Target isn't cursed" (Greater Restoration, which is also supposed to remove curses, doesn't work either). No, this looks like a permanent debuff.

I thought that, if I'll deny Lae'zel the zaith'isk, she would just murder me on the spot, and it will be game over. Now she has penalties on INT and WIS...