OP, I've been following this thread since it started, although I haven't posted before. I am so sorry to hear about your sister. How hard it must be to accept the death, however inevitable, of a sibling. I wish you and your family peace in the hours and days to follow, and hope you will take the outpouring of love, prayers, and good wishes from this thread as a source of strength.
Peace and grace be with you, and go with your sister.