My heart goes out to you. Stay strong and know you made the right choice for Belle. We have thought about the same thing with Apollo many times. He isn't to that point yet and hopefully it is quite some time before we have to make that choice but when his condition does get to the point that we believe he is suffering, we have to do what's best for him. We love him too much to have him suffer.
Our cardiologist has ordered the pimobendan and hopefully will obtain it soon. Apollo is doing well on the increased lasix but we would like to try it if we can since it has helped so many people. Stay strong and know that you will see Belle again!!!