Hmmm ... Seems to me that Agatha had what amounted to a second breakthrough when she drank the Dyne water. If she hadn't had to save Gil and Tarvek -- and if she hadn't exploded -- might she have achieved the same state as Albia?

On the other hand, we know she won't do that. "Agatha Heterodyne and the Electric Coffin" is set after the events of Girl Genius, and Agatha isn't a goddess.

(Another Hmmm ... What happens to fish that swim in Dyne water?)