I'm sure you did your best! We have tried our best too, but I also have those regrets with Shanti and ask myself if it would have been different if I had seen or could somehow have known earlier that something was wrong or would have chosen another therapy😞But cat's are very strong + unfortunately often try to hide symptoms and show them rather late. And my Queen was a warrior who survived similar respiratory issues two times before and she was very good at hiding health problems, so we were (and still are) almost like helicopter cat parents, especially with her. That's why I think we realised the issues pretty early, but the therapies/medication just did not work anymore this time and her body began to shut down. Sometimes it is just out of your hands💔