It's nice to think that when they return they'll have realised what they caused but what can happen is they'll come back and spend the rest of their lives wondering why the hell you killed yourself.
It's hard to say, I dunno anything about you, your situation and your parents... having said that I know lots about me, my situation and my parents and I still haven't a clue 'bout what's going on. I guess that's the point of a forum such as this one, chat about it and hopefully someone out there might have some bright ideas.