How might the diagnosis of Mrs. Mallard's cause of death be an example of dramatic irony?

Mrs. Mallard's cause of death can be seen as an example of dramatic irony because the characters in the story believe she has died from the shock of her husband's unexpected return, viewing it as a tragic outcome. However, the audience is aware that her earlier sense of freedom and joy at his presumed death directly contrasts with her final demise, revealing that her heart condition symbolizes more than just physical ailment—it represents her repressed desires. This contrast creates a poignant irony, as her brief taste of liberation ultimately leads to her tragic end.