Three reasons why it is important to know that facts are not important to Miss Strangeworth is because 1) It shows how reckles her actions are, 2) It helps to explain why other members of the community would be so angry at her, and 3) It provides the rationale behind why Miss Strangeworth's roses are so viciously destroyed at the end of the story.
Miss Strangeworth's discarding of facts is very important to understanding her danger to the community. Miss Strangeworth simply reacts to what she perceives to be true. She is not cautious in her decisions to divulge information. If she thinks something is true and something that others should now, she simply divulges it. Miss Strangeworth is not reflective. She does not consider the costs of sharing information and she does not process the idea that what she is saying is not guided by factual evidence.
Due to her inability to respect truth and evidence, Miss Strangeworth's actions negatively impact her neighbors. It is clear that she has made many enemies because of her intrusive ways. The result of this is that she has propagated the very evil against which she stands. When Jackson suggests that recently, "many people seemed disturbed recently," it reflects how much animosity Miss Strangeworth's lack of respect for facts has generated. This resentment feeds why her neighbors savagely destroy her roses. With the note that says, "Look out at what used to be your roses," it shows that Miss Strangeworth's discarding of facts has resulted in taking what she prizes the most.