I am sorry to hear about this of yourself and your family.
I think this is the difficult part of the human condition (at least in my experience): accepting a person being both the perpetrator and someone we love. How can both co-exist? As a child, I was unable to wrap my head around this notion. Now, I know that people can be both. It's what we do with that impact after, that can change our lives.
Be gentle with yourself through this time Lesley. And I wish you and your family all the best.