I've taken some time to think about your reply and thank you for replying.
You know you could save your energies to worry about the safety and treatment of peaceful/law abiding people whatever their sex or gender or even to fight for the rights and support of peaceful/law abiding trans people if you so choose.
Why waste your time worrying about what treatment a sadistic, animal torturing murderer will receive? It would be interesting for you to ask yourself if you would be worried about what treatment a plain old man or woman with the same background of criminality would receive. Yes a plain old man or woman could be attacked in prison sexually or otherwise, they could be stabbed or even killed. Are you worried about that? I'm not - they should have thought of that before they committed pre-meditated murder.
Why not save your emotional energies for the innocent?