The answer to what exactly
She does not seem impulsive: she seems to be working steadily towards the goal (defeating the Nazis) (so she is also not unsteady).
I think that the best word to describe her is "resilient" -for example because she went back to work after sustaining an injury.
Two types of prewriting include listing and clustering. Listing is where you have a topic and you bullet point each of your ideas that fall into that category. Clustering is where you have a circled topic and you keep branching out circled ideas that continue into more ideas.