Answer:
She is proud of the mill-girls’ contribution to political events in her youth.
Step-by-step explanation:
This is the statement that best describes the attitude that the narrator takes towards the Mill girls. The narrator tells us that the Lowell Mill girls took part of several social and political events of great significance. She also tells us that the girls were wide-awake and up to date with current issues. This implies that the narrator is proud of the contribution of the Mill girls to the political events of her youth.