You may rail at the dead if you want, the dead will still be dead.
Make up rules for them to follow and the dead will still be dead.
Blame the ghost for the haunting, for the rattling of chains, the inability to lean against a wall, and the dead, will still be dead.
Ask the dead to accept the idea that it was suicide, after all, and not murder, and the dead will still be dead.
No matter how angry you are, how misplaced your emotions might be, no matter how your life has changed, you are still alive.