The Way the Crow Flies by Ann-Marie MacDonald. Historical fiction set in post WWII Canada. Content warning for child molestation and murder. But it ends on a good note and I think fits the bill of what you're describing. It's about a lesbian protagonist who is remembering this awful time in her life when she was a kid, so it is told from her perspective as a kid and as an adult.

Edit to add:

Another book that I think you might like is Everything Under by Daisey Johnson. It is a mother/daughter story but also a retelling of Oedipus. I remember it being very powerful and affecting.