Mandy had been lying in the grass by the lake, a patch of it exposed amidst all of the snow, it was one of her favorite places to get away from everything and everyone, especially when it was cold. It was always perfectly quiet, the occasional owl soaring overhead or the Giant Squid poking a tentacle out of the dark water for a moment. She was lost in a daydream about merpeople - being by the lake tended to cause this - when she heard footsteps, which stopped a bit away, near the shoreline, and then the sound of rocks hitting the water. Mandy kept her eyes closed until she heard the childish yell, causing her to open her eyes out of sheer curiosity and push herself up on her elbows, bits of snow clinging to her cloak.
Tilting her head towards the direction of the voice, she found Ginny Weasley, hair flaming around her face, which was currently contorted into a definitely unhappy look. "Ginny?" Her voice was quiet, but so was the lake, and the sound carried perfectly.