a question for the whovians

I'm getting into the Clara episodes, which have so far been underwhelming, but then again I only really "get" DW episodes on a second or third viewing. Anyway, I've noticed a certain similarity between Clara's look and behavior and CAL, the little girl who saves everyone in the "Silence in the Library" two-parter. Am I seeing things that aren't there, or is there actually supposed to be some kind of a connection between these two characters?