"It's not lead...I was just talking about toxic minerals."

Foxglove explained. Actually explaining what they *were* was harder.

"These stones are semi-magic, or something like that. Like...Like a sponge, but for bad mojo...I've seen it in the mountains near here, so them popping up in these woods..."

She nods. It seems likely that they were likely gotten somewhere near here.

"There's a plant that grows near deposits that local animals eat if they spend too much time near the stones, and that'll make everything Ok...But I don't have any here."