Lisa,
I had the same diagnosis as your sister at age 39 in December 2004 I was sure I would never make my 40th bday. I cried night and day for weeks, my husband was very concerned and there was always someone with me whether I wanted them or not. I am not big on medication so I sought out the breast care social worker and did lots of talking, crying and guided imagery. She constantly reminded me that my emotions are completely normal with this life changing diagnosis. It truly is a grieving process and your sister will be come thru it stronger & wiser. She is blessed to have a sister like you and I will keep her in my prayers. You have come to the right place for information, understanding, love & prayers.
Here is my email as well.
mpgarret@umd.umich.edu
Mary