Mare gasped lightly when she felt a pebble hit her arm. "Hey!" she exclaimed, knowing fully well that it had to have been caused by someone. Pebbles didn't just fly into people on their own accord. At least, not in her world. Perhaps they did here, but she highly doubted it. She would have figured that out by now if they had.
Small orbs of purple lightning formed, hovering over her palms, as she scanned the few people who happened to be in the park that evening. She spotted an older (to her) man off to himself a bit, and arched an eyebrow.
"Do it again," she said, trying to be vaguely threatening.