Complex sentence: During the process of writing the book, which she describes as "cathartic", Patrick discusses how she and her mother repaired their relationship, and how she addressed problems within her relationship with her (now ex) husband, Evan Seinfeld.
Split into simpler sentences: During the process of writing the book, which she describes as "cathartic", Tera confronted many issues in her personal life. She repaired her relationship with her mother, but also realized there were problems within her relationship with her (now ex) husband, Evan Seinfeld.