May you find comfort in knowing that Dave is no longer suffering and struggling. Your daily battle seemed especially hard, and even though Dave is no longer with you, no longer suffering, I know the emptiness he left behind is extremely painful.
I think, too, once our PALS die, the memory of their daily life with this disease is extremely painful. Now that my PALS has died I find myself saying out loud: "I can't believe how much you suffered. I just can't believe it and I'm so sorry."
I wish rest and healing for you, Christy, and blessings and best wishes to you and your family during the holidays and onward.