Final answer:
Mayzie couldn't leave her poor Whos because she felt responsible for them and didn't want to abandon them. Her decision reflects her loyalty and compassion.
Step-by-step explanation:
In the book, the character Mayzie couldn't leave her poor Whos in the lurch because she felt responsible for their well-being and didn't want to abandon them in a difficult situation. This can be seen in the passage where it mentions that Mayzie reminds Dorothy of their own want and acts as a rebuff, indicating that their case could be worse.
Mayzie's decision to stay with her Whos displays her sense of loyalty and compassion.