User blog comment:SuperGokuMan/Why Wally West beats Madoka/@comment-27822848-20151222203127/@comment-27595114-20151222204245

That's not how it fucking works. She has deleted all Witches on all time and space AKA she killed every witches in the past too. Now she is omnipresent in the PAST AND FUTURE TOO, he can't kill her just by going back in simple time.