sandra garratt died on good friday after more than a year spent in agony .
the 56-year-old underwent two operations on her back for a slipped disc .
but her pain was so severe afterwards not even morphine could relieve it .
days before her death doctors said there was nothing more they could do .
mrs garratt 's grieving husband said the news had been ` the final straw '
hours before her death , she told him she was ` just popping out ' for awhile .
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