Okay, so this seems to lend credence to the idea that Erin is regaining control of the dream/fantasy. I guess that sucking in the soul of someone with Erin's powers might not have been the best idea on Miriam's part. I am also reminded that right when this whole arc started SJI got this new cover image:
https://mindcontrolcomics.com/comics/sji/c015/So I kind of expected some kind of grand challenge for Erin to come up eventually. Maybe this is part of it? Or maybe I just read too much into that?
I have to admit, SJI has an amazing way of always keeping me guessing.