When I first read your original post-heart trouble came to my mind, when you mentioned swollen belly. I didn't post because I didn't want to scare you. I had a toy poodle who presented with congestive heart failure.She did not have a tumor,though. I would have to take her to the vet, for an injection,when she would build up fluid-which also caused a cough. as lasix was not enough. Finally, I brought the medication home, and just gave her the shot myself-as needed. She lived three more years-which actually surprised the veterinarian.
I am so sorry about your baby. There is never enough time-no matter how much time you have. Keep her as happy and comfortable as you can, and just love her-like she knows you do! You have given her a better life and that is what she will remember.