Confirmation that Hook-grandma really is Hook-bang's grandma, the first appearance of who seems to be Frog-mom and the reveal that Hook-bang, Half-bang and Curly all have their own head pets (one of whom might not be welcome).
A very happy occasion but... Come to think of it, I don't think we've seen Hook-bang and her relatives smile even once.
We have never seen Hookbang's mom other than on a painting. It might hold some extra explanation of why Hookbang was sent to join the nuns, and an extra reason of why her father was crying back then... And he was also wearing a very formal suit. I didn't pay attention to that back then, but now I suspect that was a hint of a background much more tragic than it seemed at first.
And also, apparently Hookbang took more personality from her mother.