Complex sentence: Among these spaces are school, family, and various bad jobs; the extreme insider of the book is Myles's maternal grandmother Nellie Riordan Myles, who spent the last 17 years of her life in a state mental hospital in Massachusetts.
Split into simpler sentences: Among these spaces are school, family, and various bad jobs. The extreme insider of the book is Myles's maternal grandmother Nellie Riordan Myles, who spent the last seventeen years of her life in a state mental hospital in Massachusetts.