What did Mrs. Mallard's physical appearance suggest about her personality in "The Story of an Hour"?

Kate Chopin describes Mrs. Mallard as "young, with a fair, calm face, whose lines bespoke repression and even a certain strength." This suggests that while she maintained an appearance of composure, her inner life was burdened by unexpressed emotions and societal constraints. The visible "lines" on her face subtly hinted at the deep-seated emotional suppression she endured within her marriage. However, the mention of "a certain strength" also indicated a hidden resilience, foreshadowing her complex reaction to her perceived freedom.