From the beginning, she had thought that Eric wouldn't be able to draw more than 3 drops of blood from her for his second evolution.
After all, even that was surpassing the limits of a normal human being, so seeing 4 drops of Dragon Blood actually fall down from the current eggshell she was residing in, it completely stupefied her.
Even descendants born between a Real Dragon, and a human being, or another species would be given only 3 drops of Real Dragon Blood to absorb and refine.
That wasn't due to their parents being stingy, or due to racism as they were just half-bloods but because that was the limit that they could survive through after their second evolution.
Eric was no half-blood Dragon, he was supposed to be just a normal human being, so it should be impossible for him to actually be able to absorb all four of those drops of Dragon Blood.
