Yolanda struggles with being a family member and a writer in the way that all people struggle with family relationships and all writers struggle with writing. However, there is a correlation in the novel between her writing and the difficulties she has with her family. This correlation is certainly one of the dynamics within the novel that affects Yolanda the most, as it causes her a great deal of anxiety.
Specifically, Yolanda's work is heavily based on real family and her real relationships with them. This is good from a writing point of view, as she will identify with the stories she's telling to the greatest extent, which will make them more powerful for her and the reader. However, her family feels as if she's betrayed their confidence by putting intimate and true details of their lives in her work.