[ He knew Hermione was smart enough to get it without him saying anything. She was aware of time travel even before they got caught in a loop, and she knows about him. It's amazing that this is the first time he's had to use that ability since the farm, and damn lucky that he was still able to, with his powers being so off right now.

Of course she wants details, but she gets one thing wrong. ]

Nothing is going to happen. [ Her death couldn't happen the same way, but because he knows about her, he elaborates enough to discourage any repeat attempts. ] Now that you know. If you try to charge headfirst at someone, make sure they don't have better aim.