we had that last year when my d-i-l took her own life with tablets, granddaughter age 10 came home to find her on the loo dead, got her big sister 13, 2 sons age 13 & 12 to ring an ambulance and go down the road to a neighbour who is a paramedic they rang 999 & my son who was 1hr drive away at work. all the medics confirmed that there was no sign of life so the air ambulance was sent away & police stayed till my son got home. We were all devastated, my daughter 25 & I went up & stayed a week or so. All you can do is unswer the questions honestly and try & make sense of it in your own mind, without putting blame on the deceased or anyone still loving. the verdict was suicide, but I think it could be an accident as she had strong painkillers for back pain. In the end no-one knows & each will make up their own mind. Just keep reassuring them it wasn't their fault & speak of the deceased in loving terms. Time does ease, and they will learn to adjust