User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-82.178.241.162-20140115025012/@comment-1359322-20140117013811

@Otaku, Eneely isn't an enemy, why kill her. >_>

And yes Rias didn't kill Grendel, her new move damaged him greatly but didn't kill him, Rias even said that the best she could do is to prevent his resurrection for a period of time.