Good excuse to re-watch!! Also, Adalind's mother had her own stash of books and spells. I don't recall any other Wesen having their own books.

I think that statement—"the world changed"—meant that life as we know it was no longer in danger of being destroyed/altered. If Zerstorer had won, the world would be dark and evil, as it was in the Dark Universe. In Kelly and Diana's world, there are still Wesen, and they're basically doing stuff as in seasons 1-5…

About Diana—her mother and her grandmothers (Adalind's mother AND Renard's mother) were both hexenbiests. That's a lot of hexy firepower.Maybe that had something to do with it.

Yes—no regrets for Julievette. I wonder if she goes back into veterinary practice. Now that she is (still) a Hexenbiest, some cat gives her a bad time, instead of getting scratched, she goes all biesty on it and puts it out of its misery. Bud's still a plumber, Nick, Hank, Wu, and Renard all go back to the precinct.…

I think DIana's acting like she had "no will" was because she was under the influence of Zerstorer. She didn't "snap out if it" until he was dead.

I don't know—don't think so. Kelly seemed to be aware of Diana and how important she was to the whole Grimmiverse. Here's another question though—how to explain how Adalind was able to remove the ring, and when did she do it? Nick went looking for it when he came back with the staff.

If that's so, why did Kelly Burkhardt (Mom) tell Nick that Diana was going to be some super powerful force-to-be-reckoned-with? I agree with Janet—it has to do with the ritual while she was pregnant.