Lyra took out her wand. Aguamenti. If they were doing this quietly and quickly, then she was doing the silent spells of course. A jet of water sprang from the end of her wand and made the castle floors wet enough so that Tobi could cast his spell and do what he needed to do to freeze it.

And then she heard a familiar voice. Myrtle. "If you get in our way it does," she smarted off with a smile then added. "But I know you wouldn't do that now would you Myrtle?"