Imagine her feelings when her mother-in-law is suddenly taken ill and dies, and immediately after she hears the word 'Poison'! 
She never found out that her mother-in-law had died. 
mnli hypothesis: She never found out that her mother-in-law had died.  premise: Imagine her feelings when her mother-in-law is suddenly taken ill and dies, and immediately after she hears the word 'Poison'! 