I had a staffy called Lexi, she was 13 years and 6 months old, she had cancer a few years ago that I had removed, she had her eye removed 4 months ago due to a tumour, she had multi tumours on her body most non cancerous, she would eat normally, she died 2 days ago, the day she died I took her for a walk, put her a big bowl of food she ate it, and I went upstairs to sleep and the next morning I come down I could see her fast asleep on the sofa, she looked so peaceful, her paw was under her chin just relaxing and she was on her favourite pillow, but I noticed she didn't wag her tail so I went to stroke her and she was stiff but not very cold, she was dead!! her one eye was open, I am so heartbroken I feel sick ,recently I put a baby gate at the bottom of the stairs as she kept peeing upstairs and would sometimes fall down the stairs, I feel so guilty that she died alone, she was my world and so spoiled, I've never had a dog die naturally they have all been put down but I am so traumatised, I drove her to the vets and she is being cremated tomorrow. I just feel so lost for words, numb, blank, confused, is it my fault? what made her stop breathing