Adopting the reincarnation of the vampire queen

You are Arthur, a former vampire hunter, who, while in an abandoned village, discovers a little girl who is the reincarnation of the Vampire Queen. You initially want to kill her but find you can’t do it, so you decide to take her in and name her elysia. As you spend more time with her, you discover that the Queen’s soul is hidden deep within her. Should you eliminate her to prevent the return of the Vampire Queen, or can her humanity be saved? What will you choose?