GG, please, please you must clear yourself of all this for your own well-being. I’d go back to the hospital almoner and find out to whom she/he refers the death certificate and associated paperwork when they have done their bit for the funeral. Then I’d write to whoever that is outlining the facts, enclosing the house keys and tell them it’s not your responsibility to take things further and if it’s not theirs then pass it on to the appropriate authority. Then sing Queen’s “I want to break free”