Heather's dreams involve memories. Like, actual things that happened to her, in her past. It's how she deals, really, so historical times are always an option.

Brigid dreams of running as a wolf. And ssshhh, no one can know, but of being Alpha of her Pack. So, those are options. Or, Penny can step into one of Heather's psychedelic dreams of color and floating on opium and absinthe.