Magic marks disappear when someone has awakened, making the "weird mark like I had" comment in this earlier comic foreshadowing.
Anyone who saw Rhoda's having already awakened coming, NOW IS THE TIME OF SELF CONGRATULATORY COOKIES!
Not that you need my permission to have cookies or anything. Just saying.
I wasn't entirely certain I wanted to have Pandora mention ranks again, but then I noticed how close "S-Rank" was to "Shrank", and the way forward became clear.