Dandi will have many loving companions to greet him, and he will never know pain or fear again. But, I understand your worry about sending him away alone, without you. Fletcher was such a velcro dog I worried about him feeling like I had abandoned him when I had to let him go. I just kept telling him over and over that I would never leave him, I would always be with him, and after he was gone, I realized that was true. We were physically separated, but the connection was still there. I will never stop missing him, but I am still with him, and he is with me. It will be that way for you and Dandi, too.
sorry if there are errors, typing this has brought it all back and my vision is pretty blurry