NCed for this.
My elderly mother (in her early 80s) was, I believe, pushed over by my dad during an argument, and fell backwards, hard, hitting her head on a hard tiled surface as a result, requiring a trip to A&E.
The relationship is generally not healthy with a history of emotional / verbal and occasional physical abuse - possibly also sexual abuse - many years ago.
No witnesses. They will deny to police I'm sure. They will have told hospital she "fell".
I'm worried if I talk to my dad it will make things worse. I don't live nearby to keep an eye on things and my mother is dependent on my father for various things (financial and practical). I have siblings, one of whom is more local. I've not told them anything.