This is especially true when money or insurance policies are involved but can also happen when one person thinks they should receive certain things. Even though you are going through a rough time and things will make you want to explode don’t get baited into the fight. Many families have broken apart due to things like this and even if you give in to all of their whims they will still find a way to cause more issues. Do your best to follow the wishes of the person whom was lost even if that means you have to have an impartial party represent the estate. It sucks but I have dealt with this a couple times now and know some other people who have as well.