Books on Grieving Bad People

Hello,

My father recently passed away. He was extremely complicated, and i am positive he had narcissistic personality disorder. He was charming, funny but also abusive and mean, he was the absolute worse to my mother.

I want to read about book about complex grief, grieving abusive parents, grieving narcissists, anything in this area of suggestions. I would be more interested in more of a science/psychology book than a memoir or poetry book.

Thank you for any and all suggestions