I'm so sorry to hear of your sister's passing. I wish I had the words to take away your pain. It is so hard to lose someone you love so much.
I would suggest that you pay attention to your body, there will be a lot of things asked of you. Take care of you. She is mercifully out of pain, it is now her loved ones who are left to grieve. Take all the time to you need to grieve. For most ppl, it takes time, a lot of time.
You and your family are in my prayers.
God bless. Alice.