Why oh Why?

Today was hard. Interviewed parents of a murder victim. Sat during the interview and just wondered why ?! why would they want to take part in this programme after mourning their child for nearly 30 years? what do they get out of it? they talked about their grief as if it were yesterday, what right do I have to bring all that up again? Was a very difficult time....just hope I can make a show that somehow justifies their pain...