I'd wait till the test results came in and I hope that their yorkie is okay.
That is SO sad. Our cousin had a yorkie, Sable. Sable passed on at 18 years of age. Poor baby, had cataracs and cancerous tumors all over him. Made me so mad that his owner made him suffer as he did. They live in a huge nice house but she never had the money to let him pass with dignity. He suffered until the morning he died.