What information is given about the mother in the exposition of “the leap”?

"The Leap" is a short narrative story about the narrator's mother, Anna, a trapeze circus artist, written by Louise Erdrich.

Explanation:

In the exposition, the narrator tells about her mother's life in a circus. And how she saved her life when she and her first husband, Harold Avalon, were performing, and lightning struck and killed her husband but she managed to save her life. The narrator shows how courageous and brave is her mother.

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wheres the passage with the idiom underlined