The main purpose is to:
highlight for readers the hardships that Eileen Collins overcame
Step-by-step explanation:
"Eileen Collins – NASA's First Female Shuttle Commander to Lead Next Shuttle Mission" is a text that bases itself not on the facts of the mission or the the journey of the protagonist once she becomes the shuttle commander.
The story instead focuses on how she overcame bias and odds to become what she has become.
It is a story of her struggles and trials and tribulations that have brought her this far in life.