People is reporting that Elizabeth Edwards, best-selling author and estranged wife of presidential candidate Sen. John Edwards, is not continuing with additional treatment of her cancer on the advice of her doctors, after the disease spread to her liver. “I have been sustained throughout my life by three saving graces,” Edwards, 61, wrote on Facebook on Monday. “My family, my friends, and a faith in the power of resilience and hope. These graces have carried me through difficult times and they have brought more joy to the good times than I ever could have imagined. The days of our lives, for all of us, are numbered. We know that.” She was first diagnosed with breast cancer in Nov. 2004.