Elsa thought about Hady's question for a moment, still squinting her eyes to try and distinguish something in the lake, but gave up with a sigh
"I think I saw a mermaid the other day, near those plants there" she pointed with her finger
"but it was so fast I can't be sure." She thought back to the muggle stories about a mermaid her father had told her. What she saw didn't resemble a fair princess. It looked somewhat feral.
"Are they humans that resemble fish with a scowl on their faces?" she asked, trying to describe what she thought she had seen
"if they are, that's totally what I saw". SO COOL.
She felt another shiver shot up her spine. She shouldn't like the notion that strange or scary things were common to happen at Hogwarts, but it made her wary and excited at the same time. Her eyes became wider and rounder with contained excitement and a trace of fear
"That sounds... promising" she said, lacking a better word. She could understand that not all things were necessarily bad, just.. weird.