Re: So sad and desperate about all this.
I'm so sorry to hear about the strain this is causing you.
Not to mention, of course, your grandmother's suffering. With all these things she is taking, she can be sort of drowning in what is not leaving the body fast enough.
Bless her heart.
But you must take care of you, as well. Having this kind of empathic connection can be very, very draining--may I suggest you look into the Yuen Method of Energetics, for yourself--to help esp. with the feeling of being totally overwhelmed, and to boost your own system.
Your feelings of not having chosen the career path of an MD, believe me, I know that feeling. I have been looking into health for my family for several years, and much of that time carried a sense of hoplessness.
You might look up Paul Wong; I was looking into his work just today, and he feels like a person of integrity. I trust this work, also. I plan to learn it myself.
He might be able to help you a lot, just over the phone.
http://www.chineseenergetics.com/Testimonials.php
Best wishes and love to you, and yours!
C