I personally haven’t had to face that yet, but my dog is 15 1/2, and I know the day will come. My mom and I recently got into an argument because I said I didn’t have it in me to have my girl put to sleep if something happened. She would have to be in an immense amount of suffering because otherwise, there is no way I could put her in the car and drive her to her death. I only hope that God takes her for me.
If I were you, I’d wait and see. See if there is anything to keep her comfortable. If she’s suffering badly, then you have to make the decision.
Well, I’m praying she goes in her sleep. Prayers for you and your pup...