Ace went to all this trouble to steal blood from the superheroes' League so his dad (Dr. E) can make an anti-serum, but I was having a little trouble with the timing of giving him this blood and Dr. E making the anti-serum. And I realized tonight that obviously Evie stole a sample of the serum and gave it to Dr. E during the handy 3-week jump I added for pacing purposes. I had actually considered doing that at one point because I was playing with the idea of making my short story that inspired the whole anti-serum aspect of this novel canon, but couldn't justify skipping the vital process of getting Dr. E the serum to make the anti-serum. Now that part totally works.
Unfortunately, at the point that I decided I couldn't keep the short as a separate work, I started cannibalizing it, so now I could legitimately save it, but I have to revise out those parts, which are now kinda important.