Dreams are a way to process emotions. I think they are healing, even when they are upsetting.

I used to have dreams of my old house that were haunting, like being on a ghost ship. The trauma was the death of my father, not my abuse like you experienced. I had not returned back to the town in all those years, and felt major anxiety when going near it. When I told this to one of the first psychologists I saw, I was diagnosed PTSD.

Over time, that dream stopped, things have morphed and changed, other traumas surfaced which we now call c-ptsd.