When his mum died suddenly but not unexpectedly my ex refused to speak of her in the past tense, so the first time we went to visit his father the two year old kept going round the house opening cupboard doors 'looking for nanna'. His family always brushed such things under the carpet, whereas in my family we were always very open about it. I do remember my daughter holding the hand of a remote family member at my mothers funeral service, and being quite touched by it. Maybe the children will feel more upset by picking up on the general mood of the family but not being part of the funeral arrangements? Even so, all I can say is how sorry I am for your family. My friend's little pony died very suddenly, and his son who was very young at the time believed that he had gone 'to the end of the rainbow', and thought of him whenever he saw one.