I am so sorry. Your story has me bawling. Someday I will have to go through this exact same thing with my Taz. I know it will be extremely difficult. But we just have to remember they are in a better place now and out of pain. I know you probably don't need to hear all this right now.
Those pictures you shared are wonderful. Great ways to bring up memories of your time with Dusty.

RIP Sweet Dusty.