Mum and Dad had a joint will. It said nothing about burial rights simply that everything was split between my younger sister and I. Each executor was an older brother to them. Mum's brother now favours new partner over my Dad, despite it being his friendship that brought Mum and Dad together. Then the other brother, who is Dads elder brother, agrees strongly with me they should be buried together. The will has taken over a year to finalise and its still not over yet - due to my maternal uncle being constantly out of the country with his job or on holiday. I did not speak to younger sister for several months following mums death because she chose new partner over our Dad. Does this help?