Not going to lie, my first impression of Margaret was not a good one. She seemed obsessed with assimilation. She sold her son's land for linoleum! If I recall correctly, houses that now have linoleum are considered cheap but that's an entirely different discussion all together. I was ready to write Margaret off as being rude, selfish, and mean since she teased Nanapush relentlessly. I will say she definitely gained my respect in Chapter 14, The Medicine Dress.
I started to give Margaret a second chance after I saw Nanapush fall off his rocker completely. I want to focus specifically on Chapter 14 because it shows a whole new side to Margaret's intelligence and depth to her personality. She tells the story of how she would hide under her grandmother's dress to avoid being taken from home and sent to the government schools. She then leads into discussing the use of names and of women.
Margaret associates the changing of Native names to Christian names as the shift from living to dying. She then talks about how she withdrew within herself and became "mean" to avoid the death of what she sees as her soul. She says, "Some may think I am mean, but that is why I'm with the living yet." Maybe that's why we can then view Fleur's renaming as a rebirth and a way to live. She is abandoning the Christian name, the death, and taking the Native name, the life. She also tells Fleur, "For you have been lonely so long, you nameless one, you spirit, and it will comfort you to finally be recognized here upon this earth." Fleur wasn't nameless, her name was Fleur. So why does Margaret tell her that? I think it is because she viewed Fleur as empty and synonymous to death.