I wish this thread wasn't necessary. It's one of the saddest I've read on MN. Although I've no direct experience, my sister lost her husband 4.5yrs ago, when she was 57 and she's really not come to terms with it. He was a lot older than her and in ill health but died suddenly, more-or-less in her arms.
Since then, she's been in poor health herself, most of which I, my mum and her adult children think is psychosomatic. She's developed 'food allergies' and now weighs 6st 12, despite being 5ft 10in tall. She's had every test known to man, which has shown no illness whatsoever, except for a prolapse and cataracts. She says she has nothing to live for, despite having 5 grandchildren, and just wants to join her dh.