Diane was just in the middle of waving back at Cam, maybe exchange a few words of greetings, when this older student came in. Yes, Diane recalled her from one of the classes. "Why, thank you, that's very kind - Anna, you said? I knew I remembered you from somewhere. You were involved in the guess game in History of Magic recently, weren't you? It's nice to see you again."

She turned where Anna was gesturing and returned to her, "Oh that. Initially I meant to compare the water from the lake to the water from the flood." She turned the other bottle around to reveal the label that read 'dark / flood'. What she meant by that, it was not clear. "One of the hypothesis is that the water odd behavior is caused by the water's inherent magical nature as mysterious as its origin; the other theory is that it's controlled magically by exterior forces but it remains normal lake water."

Her eyes moved momentarily to the professor in a gesture of indication and she proceeded to tell them, "With Professor Kazimeriz' help, we might find the source of this abnormality - Have you heard," her expression changed suddenly, becoming quite more curious and decisively more serious, "that the water flooded all the ground floor but stopped at the broomshed abruptly? Oh, which reminds me," she added, brighter, "We may be able to exchange some theories. Have you any? I look forwards to that."

Diane walked a little to the side, and stood on tiptoes to have the professor at view range and to address him, "Professor, would you say SpeRevelio for starters? I'll prepare a sample for each of you from both waters."