Sorry, I wasn't clear with my suspicions.
I think that this is set before Susan's transformation/evolution into LaFointaine.
Moreso, I think that we are going to see the change occur.
We'll be there like a fly on the wall at ground zero.
And moreso, moreso I think that this levelling up is going to involve an extreme hair cut.
"Susan (**Snip-snip**) No, more!"
Nooo.
I just had some fearful thoughts.
What if the lax gender imprecision LaFontaine personifies later on in the earlier seasons isn't just a choice she made after introspection? What if at the end of this bloodharvest, Susan is the final sacrifice who has to come to terms with new physical realities?
If they're fighting a God again, someone (Susan) may have to give this God all their periods (either contractually over the course of a normal life span, or by squashing time into a red jet and knocking back 40 years of Carrie at the prom in one compact shot glass) to kill it, or fatten the blood God up till it rolls away for a hundred years, or Susan takes over as the new God/dess, and it never stops. A (classical) Goddess of menstruation should logically always be menstruating right?
Having babies in the modern world doesn't define a modern woman as a modern woman, but if you won't (because of magic) stop menstruating, you can never become pregnant, and therefore (because even the most enlightened of us are aware of the most traditional thinking) get all questiony about what is a woman and why you are or are not a woman.