A note on the pun:

Ise says "Zuibun to ookikunattana!" - "You've gotten pretty big" first.

She changes it to "Zuiun to ookikunattana!" "Zuiiun's sure have gotten big".

Not one that translates well.

.....Isn't that supposed to be backward? I mean, knowing the Ise sisters, it's more likely that they speak zuiun instead of zuibun..... But..... If it's a pun, it's a hard one to understand, let alone translate.