 Unfortunately this will haunt her for the rest of her life as there is no magic or science known to man that can reverse the condition, even with Bianca's death.In "Changes", the Leanansidhe forces Susan to sleep by making her inner predator dormant, and offers to bargain with Harry for her knowledge, which he declines.Harry had been having trouble saying "I love you" to Susan, and only blurted it out when she went into vampiric bloodlust.