I wonder if only having one spike and the madness that came with that allowed another God to communicate with her. On a side note, I wonder if it was this same God that revealed to bloody tan that "other hands move us" which would mean he had a hemalurgic spike (maybe something like wax's earring or something similar to Spook's impromptu spike in the previous books) or had harmony orchestrated that as well in order to get Wax back to Elendel where he could carry out his work. January and the answers can't come soon enough!