"I swung a pot like a weapon." Lucy answered. "I didn't think there were any of them around. But that's when things started being thrown around and falling over. Maybe they saw what I was doing as a threat? Or maybe I injured one that I couldn't see?" It was possible. Anything was. For all she knew, the ghosts could have read her mind and been aware she had been looking for weapons in the first place.
She mentally cursed herself. Her need to constantly prepare for danger - could be to blame for actually placing herself and her grandparents in danger. "I'm sorry. I didn't know this would happen. If you can go, you should."