Hun, Sophie has been in my thoughts since the day you first posted about her journey to becoming an angel. I've done some looking around (google, yorkie books, small breed books, veterinarian textbooks, etc.) and came up with nothing. But somethings did make me wonder. Is it possible that she hit her head/hurt her neck/spine? Or maybe collapsed windpipe, yorkies are genetically predisposed to tracheal collapse (weakened cartilage rings of trachea) just the right amount of pressure in just the right area can cause a collapse.
I'm so sorry you are going thru this. I am glad to see you are using YT as an outlet to work thru this thou. We are hear
for you. HUGS!!!!!