No experience at all sorry sweet, and I really feel for you and your lass. All I can say is follow the vet's advice and consider her quality of life, plusses and minuses. Cherish every day with her and keep up with any medication that has been given. Sometimes we have to play God and decide when the time is right and you will know in your own heart when that is. This may upset you cos it would me, but keep an open mind, try every treatment that they offer you, and just think of her quality of life on a regular basis. My thoughts are with you and your kitty. Cx.