IMO her face shows a lot of emotion even when she is not speaking. There were quite a few times you could tell she was emotional by her eyes and the way her mouth and cheeks moved. (Facial features showing emotion is quite typical in movies)
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You were probably kidding and probably off topic but the movies don't show the 15 years of him kicking everyone's arse after the clone wars and subjugating all those systems. If he beat theis group of rebels down we would not have the stories
(Check out the new canon Vader comics if you want to see how bad arse he si!)