(I've been fangirling over Cheyenne's colours on the recent page again.) Listen, I'm just happy they're getting to this plot bunny, but we know that somehow or another the threat will be ... ameliorated somehow. Possibly not "defeated" so much as "converted to benign status", much as the creepy Dreen have been revealed as the same type of fallible, nay goofy, denizen of the universe as all the other characters. (Look how many years that took - decades of the weird foreshadowing all the way back to the beginning pages of Chap. 1.) It's an ongoing theme of the webcomic.
Grandmama Terebithia notwithstanding.