I am so sorry for the loss of sweet young Blaze. I can't shed any light on why these things happen, but, to assure you it wasn't anything you did/didn't do. Sometimes these young things come into life with much against them. Please take care of yourself, and Bambino, and the other ones. Know that Blaze is healthy, living life to the fullest, and looking down on you from RB. She knows she was loved by you.
Hugs,
Johanna