Welcome to YorkieTalk. I am so very sorry that your little Ava is sick. Please dig a hole and bury the guilt -- that's where it belongs. As long as we are doing the very best we can do for our little ones and strive to learn and do better, what more could any one of us do? Not one of us here or anywhere can honestly say that we haven't made a mistake. Most of us are lucky with our mistakes and they don't come back to slap us in the face.
I will send prayers upward and healing
outward.