Final answer:
Hiram's gramma calls Naomi a poor little thing because she is Hiram's sister and Hiram's gramma pities her for her unfortunate circumstances.
Step-by-step explanation:
Hiram's gramma calls Naomi a poor little thing because Naomi is Hiram's sister and Hiram's gramma pities her for her unfortunate circumstances. The word 'poor' suggests that Naomi may be in a difficult or disadvantaged situation, and the word 'little' implies that she is younger or smaller in size. It is possible that Naomi might need some extra care or support due to her circumstances, which leads to Hiram's gramma referring to her as a poor little thing.