The context of the following conversation is Sasha was working a nurse when she accidentally gave a patient the wrong medicine and he died.:
Sasha says I can't believe I have done this. I'll never forgive myself.
The friend responds Sasha accidents happen. It's not like you did it on purpose.
Sasha responds But it's an accident that cost someone their life. I'm a murderer.
The friend responds You did not do it on purpose, you did not murder him.
Sasha responds I've ruined his families life.
The friend responds I'm sure they will forgive you one day.