I didn't think anyone could play Demelza after Angharad Rees. But Eleanor is absolutely brilliant - as you say, Mozart, you can see right through to her soul.
If it would only be possible to give one actor or actress the (American) Emmy award for "Poldark", I'd have to give it to Eleanor Tomlinson as Demelza.
All the actors deserve Emmys, but with Ms. Tomlinson's Demelza, I can see right through to her soul, what she is feeling and thinking at every moment.