I am sorry to post that Dr. Sophia Yin has passed away. I have followed her work for quite a while and was a quiet fan. Her work was excellent.
Her family has asked for some privacy, which is understandable. Like myself, a lot of people must be asking, "What happened?" Well, we'll find out over time. It really doesn't matter. She helped a lot of people, and did a lot of great work for animals, and she will be remembered fondly by those who followed her.