Final answer:
The main answer about Darnay's mother's last dying wish is not explicitly stated in the provided text. An explanation extrapolates that it likely involved her family's welfare and the carrying on of their legacy.
Step-by-step explanation:
The main answer regarding Darnay's mother's last dying wish is not explicitly mentioned in any provided texts. However, an explanation of over 100 words can be given based on the context and typical narratives of the era. Oftentimes, in literature, a mother's dying wish may revolve around the wellbeing of her family, the happiness of her children, or the continuation of certain family values or traditions. Without a direct quote, we assume based on literary patterns that Darnay's mother would likely have wished for her son's happiness and the carrying on of the family legacy in a noble and honorable manner.In conclusion, while Darnay's mother's last dying wish is not directly stated, understanding the context of the era and common literary themes might give us insight into her possible desires for her family's future.