How is Daddy Glen portrayed in the novel, and what evidence can we use to explain his abuse of Bone?

Anney's tortured and unpredictable second husband, Glen Waddell, is the black sheep of his middle-class family. Glen is a possessive and controlling man. He attempts to isolate Anney and her daughters from the Boatwrights. He has trouble keeping a job and keeps moving the family from city to city in his quest to secure employment. Insecure and angry, "Daddy Glen" releases his inner rage by physically and sexually abusing Bone. Unable to assume responsibility for his horrific actions, Glen insists that Bone purposely provokes him. Eventually, Glen brutally rapes Bone - leading to Bone and Anney's separation.