We took in a dog a few years ago to save her from being bred to death due to her breed and colour and we were told she was abused and potentially going to be used as a breeding dog. When she was spayed they said her insides were in a terrible mess and her uterus full of fluid. Our son who is now 9 and diagnosed ASD was 3 when we got her and sadly about 18 months ago my PIL had to take her in as his meltdowns got worse and she got increasingly more scared. Originally I had said I didn't want another dog after having to have my first dog PTS as it was too emotional saying goodbye but DH wore me down. PIL have just phoned to say she's been to the vets and has inoperable and untreatable cancer. They are testing to see if it's an aggressive/invasive cancer and if it is they've said the kindest thing will be to put her to sleep. I'm devastated for them as they have absolutely loved having her but selfishly I'm sad for me that I will have to tell my boys who will also be devastated. Do I warn them first? One is only just 3 so won't really have an understanding. I feel really tearful about it and I honestly don't know why as I haven't missed having a dog in the house! AIBU to feel so sad about it?!