The stone looks like it was designed to lay flat. Florence and her husband are on one side. There is an older or more worn Coveney inscription on the otherside.
Inside the Church Burial records for 1949-1985 there is a loose cremation certificate for a Leonard Winston Coveney, cremated in Australia 09.08.1957. - Leonard was the son of Florence and James.
See last Image
Florence is marked as ashes in the burial reg.
James I could not find any entry for. If he was interred as ashes that could have been at a later date. (I checked entries around Nov 1966).