See Constantin's blog for information on a woman who needs immediate medical help in the way of a liver transplant. I called the number Constantin provided to get information on exactly--really--what Shari needs.
She doesn't need a transfusion, or blood, or that kind of thing. The deal is this: She needs a cadaver liver, and she needs it right away. It doesn't have to come from NY, but I would think a good way to start would be putting the word out in the NY Hospitals, or NY Doctors, and doctors around the country--world even?--regarding Shari's current condition.
I don't know, personally, how designating an organ takes place. For instance, if today, you were to know of a loss in your family or another family's--an aunt, uncle, cousin, sister, brother, friend--is it possible to say, get this liver to Shari? Does there have to be a matching process, or is any liver better than no liver? I'm not sure we can get these answers in time, but stranger and more miraculous things have happened.
If you know of anyone who can help, this is the number to start off with, and they can refer you onward: 877/223-3386.