Taking all factors into account - the only viable treatment would be chemo - you have to understand that secondary cancer retains the characteristics of it's origin i.e. liver cancer originating in the bowel i.e. bowel cancer will still be BOWEL cancer even though it's spread to to liver, and so the treatment regime wouldn't be so straightforward as with a primary cancer. Transplantation would not be an option, as the drugs used to supress the immune system also stimulate cancer growth - that's why cancer patients aren't considered for transplant.
I really do hate to say this to you, as you obviously care, but I think the doctors in this case are right - it's in the hands of god or whoever.
It's moments like this that make me realise how bloody INADEQUATE we really are.