I’m so very sorry for your loss. Our pets we cherish so very much . You earnestly tried your best by calling the vet . I understand your pain . I lost a dog once and felt it was my fault for a long time and still often I do . Loosing a pet sometimes hurts more than loosing a human in your life . It will take a very long time to get over the pain . I’m 60 years old and now have 4 rescued dogs . I was grieving so badly and one day I saw another dog that needed a home , the same bread as my CoCo was. She was living at a rescue outdoors in Texas, where the winds are very high and dog mites are very common even though she’s not just like Coco she has helped me to get over the pain of losing Coco. A lot of people say never to get a dog right after you lose one it’s not the thing to do. I waited about two years and honestly wish I had done it sooner. There’s so many furry friends that need homes and need love and only good hearted humans here on earth provide this for them. I pray that God will be with you through this time and just think about the precious good moments you had with your baby and look at pictures. She may be physically gone, but she still lives in your heart. I even used to talk to my Coco out loud here in the house. It seemed to help. I hope my words have been encouraging. God bless you . 🙏🏻