A further update: The elephant cow has been found and she has now been investigated. It was determined that she is very old, so old that her teeth are too worn for her to masticate her food properly and thus a bolus of un-chewed food is blocking her alimentary canal, i.e. She is constipated, in pain and at the end of her natural life. She will be euthanized once she is on her own. Her calf of three years old is no longer suckling and has been seen within the breeding herd.
May she rest in peace.