the very short delay between death + cremation indicates that death was not unexpected(no time for postmortem or inquest) and also that any known relatives were on Island (as otherwise no time to allow off Island relatives to attend) or that there were no known relatives to inform and social services handled the cremation - I know when my father died and I needed to arrange a funeral within a similar short period to allow a brother to return overseas that it wasn't that easy though the crematorium was I think not that heavily used as old Manx families tended to have family plots