Mhairi smiles.
happy.pleased.proud.
They'd slain the Beast and protected the Dreaming mind of Erich Zahn.
Mhairi sighs, and look at the others, focuses her will...
...and wakes up.
The dawn light streamed through the parted curtains of the attic room-that-should-be, and the glued together fake dream gadget had fallen to the floor. Mhairi picks it and the other wires and tech they'd used to trick Erich Zahn up, waiting for the Spring and her Paladin to wake up.
They'd done good work, hopefully it was enough - the wisp remembers the halo of light surrounding Erich's Dreaming self, and knows that the wyrd would be at work once more. Soon their attic resident would find himself in his proper Edna's, that still had Betony Rue to manage it.
Sorry if I went to far on the narration, I just had a spark of Inspiration!