One guesses that Teka is digging for characteristics in Erma that match up with her own and seeing that though she is Erma's clone daughter their upbringings were vastly different. Teka wants to know how far her apple falls from the genetic tree.
This page is especially beautiful. Good detail on the characters, the lighting effects (neat backlighting!) and interesting perspectives.
I'd like to think I have a good eye for lighting, especially as that's how I prioritize visual information (weak color vision)