I am very sorry for your loss and sorry that your family was unable to arrange for a funeral Mass for your relative. Unfortunately, human nature being what it is, it is very possible that more effort is made to accommodate the well-known and influential. This isn’t the fault of the Catholic Church, but of frail human beings within the Church. The good news is that you can arrange for memorial Masses to be said for the repose of your relative’s soul. This can be done either at your parish or by a religious order. Just contact the coordinator for memorial Masses and ask what needs to be done.