Answer:
The event that changed Frenchie was during the event of loosing his mom and Mitch, his elder brother to the Recruiters that raided their area.
The absence of his parents was a deep scar he had. He finds himself nomadic, alone and isolated from his community.
Having experienced such incidence, he had to put up with another group and started a whole new life.
Step-by-step explanation:
The Marrow Thieves is a survival story written by Cherie Dimaline. The story talks about “recruiters” who kill and harvest the bone marrow of Indigenous people. They engage in hunting people in order to extract their marrow and serve a non-Indigenous clientele that has lost the ability to dream, and hopes to restore their dreams by consuming Indigenous marrow.
The protagonist, Frenchie was a victim of the recruiter's act. He lost his mom and his brother which gave him deep scar.