http://www.mayoclinic.org/meld/mayomodel7.html
Below the calculator, there is a widget that offers 90-day mortality rate; but there are many variables involved, I believe. Best to consult with the doctor though.
Of equal importance in all this is your health and well being; you might want to contact Alanon, if you haven’t already done so. There are folks there that can offer you coping tools to help you through all this.