She actually doesn't smile in the original picture, she has a determined and strained expression on her face, actually failing to smile. It's as if she was told to smile but all she wants is to get it over with so that she can return to science, she isn't amused. Also, she looks worried; yet she holds her high because she knows she is strong and Cave and she can get over whatever difficulties they are facing at the time.
I know in my remake she looks a bit more unhappy/angry than the original, but I'm not a modeller, and this was all I could do with the expression options I had with the model. Same thing goes with her nose.
Yes, just still I'd say Caroline is a beautiful woman,but The part where she says Yes Sir! Mr Johnson! So i mean that she looks so cheerful,and i would say that she passed some tests too i guess,maybe that She is married to science can mean that too,who knows?