Things You've Inherited From Your Mother focusses on Carrie, but the broader use of characterization does as much to build readers' understanding of Carrie as Carrie's own narrative. Ultimately, however, it is Carrie's voice which will linger for readers, as much as for the cringes and winces as for the giggles and snorts.
The prose remains buoyant even when the narrator is sinking. And the novel's structure is tightly knit, so that the final words leave readers with an understanding that the simple fact that readers are holding this story in their hands demonstrates that Carrie's means of coping with her grief were effective after all.
(This is a spoiler-free space, but I would love to tell you exactly why the ending was so fitting. I do have much more to say, here on BuriedInPrint.)