I think you made the right call. Shes now in a peaceful state and she can relax. She was in pain from what you described. If the vet followed up with your call to put her down, then that means they agreed too. Don’t think of it in a bad way, the only thing you can do now is moving forward, and carry her in your heart from now on. Dogs are very loyal, and she will always be yours. Maybe in the future, you can get a dog from a shelter that you can comfort and take care of in honor of your recently lost dog. Hope this helps, and I understand the pain of losing a dog. You just have to pick yourself up and keep going, because that’s what they loved seeing you do every day!