So sorry you had to let her go. She made you strong enough to endure your grief from your wife’s passing. Sometimes there is no reasoning, but she knew you needed her. We had to put down our 2 last pups. The last one was the hardest. He had Addison’s disease, so we treated him and gave him the best life. I swear I see him peaking around the kitchen cupboard whenever I am cooking a meal. He will always be with me. Bless you. There will be another pup out there that needs you, just as you will need it. Grieve a little, but know that her doggy spirit will join the next pup you find.