Mrs. Mallard suffers from heart troubles and her sister Josephine, tries to comfort her while scared to tell her a bad news about her husband's accident and Richard is there too.
I'm free Josephine!!!
Mrs. Mallard wants to be alone in her room.
She realizes her freedom since she was not happy with her husband
She had died of heart disease - of joy that kills.
Mrs. Mallard let Josephine to enters her room and tells her her happiness
After Mrs. Mallard comes to conclusion that she is now free to live a happy life, she and Josephine walk down, just as Mr. Mallad comes through the door, healthy and unharmed,and wondering why is everyone seem so shocked
Mrs. Collapsed, dead. The Doctor said "She had died of heart disease - of joy that kills." He thought she was so overjoyed to see him that she died immediately. In reality, she realized her "freedom" was never going to happen, and that killed her.