pretty sure the hospital would be investigating self harm/domestic violence.
I don't get how that frail old man would overpower a young fit person though. like ok I know men have more physical strength but he's old. surely if there's been a scuffle she could've overpowered him?
oh who knows, it's all useless speculation. guess we will never really know the truth. oh to be a fly on the wall in their house though!