In the past miscarriage was never mentioned. Ten years ago three of my cousins, were helping their aged mother clear out her house ready to downsize to a flat. They found a box which contained baby bootees, etc. Talking to the Mum, she then old them that back in 1939 she had miscarried her first child. At no time had she or her husband ever talked about it to anyone. Seems so sad.
One of my daughters had five miscarriages - thanks to medical intervention she did go on to have two lovely daughters, but still lights candles of rememberance for her five little 'stars' as she refers to them. She has no religion, so this is her way of dealing with it.
The death of one of a twin is particularly hard to deal with. People keep saying things, like' well, you have one healthy baby' = but that can make it all the more difficult, as that healthy baby/child - is a constant reminder of the one who is not there. The charity TAMBA does have counsellors for parents who are going through this sort of trauma.