Liscentious Ectomorph - First, my condolences and sympathy to both you and your partner. Death is never easy for those left behind.
I’ve never dealt with the added complication of police involvement but I’ve dealt with the rest of the process. The first thing to remember is that by and large, friends and family want to help. They may have very different ideas of what constitutes help, but their hearts are in the right place. There are lots of little details to be taken care of, and at first, those details can be a saving grace. Your mind will come back to what has happened on its own, over and over again - having tasks can give you the sense that you are dealing with the situation a little bit at a time.
There is much that you can do to help - for example, if you can take on some of the contacting of the friends and distant relatives, that can take an emotional burden off your partner and his family. First, there will be all the dealings with the police, then the funeral, then going through all the stuff to find out about wills, insurance, pensions, bank accounts. Eventually, there may well be cleaning out the house, selling it, settling the will, paying off debts still owing, filing the final taxes. It is a huge amount of work when you first see the list, but a little bit at a time, and a lot of delegation of tasks makes it easier.
Remember, other people want to help, and it may make cousin Joe feel better if he can help out by picking people up from the aeroport, or if Auntie Marilyn does the groceries. If they’ve offered to help, you’re not imposing by giving them specific tasks.
And talk about the parents while they were alive; who they were, how they met, what they liked. There’s something strange about death in Western society, that we don’t want to talk about it. The people who have been bereaved need to talk about the people who have passed away, and not just at the funeral, but for years to come. Help your partner and his family with that. There are years of two people’s lives to be talked about, and that’s more important than the ending.
And if there’s anything we can do to help, let us know.