I am guessing that Nell's picture on the DVD box is from a later season and Season 1. In S1 she was more on the plain side, ad then they seemed to give a little bit of a makeover. I liked the early plainer Nell better.

I'm guessing it was from Season 3.

Yeah, this DVD, even though it gets a 10 on 10 is screwed up big time with Nell's pic, the season 3 family pic on the front cover, the season 2 theme on the intro menu, and there are NO CHAPTERS! There should be one after the credits, after the fade out, and before closing credits.