Once the Princess finishes Vald's Key quest, Jacia will offer the Princess the quest of killing Vald in his house at 15, Squire's Road in Betancuria West. Jacia will ask the Princess to bring Vald's head as a proof. This is a straightforward task, albeit a gruesome one. The Princess can refuse to take this quest and earn some alignment points towards good, or take it and gain some points towards evil.