Diane had only just came out from the History of Magic classroom, big backpack in place walking nevertheless rather calmly, when she saw a peculiar scene going on, involving a girl she had met who climbed over a window sill in fear and, was that girl--

"Excuse me," Diane said, approaching and placing a hand over the shoulder of the girl with a cane. "Let me lead you out, this place is flooding." There was no doubt about it, the girl, she was blind. Diane held her arm, though from this perspective it was even more obvious the difference of height - why, Diane was only a first year, "My name is Diane, what's yours?"

But, as she was trying to lead her to the stairs, and before the girl could answer, she looked up and addressed the other Ravenclaw. "What are you doing out there, Daphne? Hop down, the corridor is going to be completely flooded in a couple of minutes and we better get out."

She herself had pretty good reasons why she should have no contact with the water whatsoever.