I think that - Vala's episode takes it all together. I do not know. It was somehow so familiar for me. maybe because Vala quite reminded that ascended being working on that café Daniel was when he was between two plains. Anyway, I loved the depth this episode added to Vala. First the sentence when she step by step started to remember - that maybe she does not want to remember past as it does not sound too good. That shows that within she is a good person. I think this was the point the wanted to prove - as when we first met her, that was not too sure.
Also, that little naivnes what we learned about her and in the end. I think emotional episode, again. And mainly character development.