Tumultuously: adv: loud, excited, and emotional; marked by violent or overwhelming turbulence or upheaval.

From “The Story of an Hour”: “Now her bosom rose and fell tumultuously. She was beginning to recognize this thing that was approaching to possess her, and she was striving to beat it back with her will–as powerless as her two white slender hands would have been.” (paragraph 10)

Now I understand that her chest is moving quickly and turbulently because she is so upset or emotionally damaged.