How was elinor’s sense of propriety upset in sense and sensibility

Elinor is entirely sensible and prudent, able to handle people and situations very delicately compared to her sister Marianne who is very emotional and never moderate, lacks some good sense.

Elinor was grieving but also attending to matters at hand while her mother and Marianne are allowing themselves to grief. 

Elinor is entirely sensible and prudent, able to handle people and situations very delicately compared to her sister Marianne who is very emotional and never moderate, lacks some good sense. Elinor was grieving but also attending to matters at hand while her mother and Marianne allowed themselves to grieve. She very rarely wavered from this sense of propriety until she discovered of Edwards engagement to Lucy where she began to have a harder time concealing her emotions, especially after Brandon's gift to keep Edward and Lucy sustained. Another time her propriety was upset was after Edward showed up to her house unexpectedly as she was told he had married Lucy. She was filled with joy and heartache within a very short time and she let her emotions be shown instead of being concealed.

Explanation:

i'm thinking it would be when compound subjects are joined by or, nor,either-or, neither-nor.