OMG Rose!! I just saw this. I know you're doing everything you can to find Chaz. Wish I was closer to help you, but please know I am sending prayers.
Make sure you contact every Vet in your and surrounding counties.
Sometimes in our hurry and fright to find the babies we overlook some things, so here is the thread link to make sure you're covering everything and everywhere. Keep us informed when you can.
http://www.yorkietalk.com/forums/showthread.php?t=49514