"I didn’t say what he did was right, but I don’t believe he did it because he’s loyal to You Know Who, Harry." Hermione put his hand in hand, comforting him while also making sure he wouldn’t do something stupid and run in the direction of their enemies. "Remember when I told you about Draco’s task? Snape knew of it and offered his help. I have no idea to what extent but I’ve heard him say it. So, what if he cast the unforgivable so Draco didn’t have to do it? To protect his godson."