Randy,
My most sincerely sympathy and condolences on the loss of your baby sister. I lost my next youngest brother and losing a sibling really has a lasting impact on your life (duh).
My brother, at 25, died as a result of 10+ years of minor to major substance abuse (including heroin), and I obviously have not gotten over it, as I just woke up 15 minutes ago from a nightmare where I was desperately trying to get him some professional help. And he's been dead for 28 years.
There will always be a void that can never be filled.
One thing that my family started doing after my brother's death was to find a way to remember him with humor. If something happened and blame was to be attached, even a minor incident such as a glass falling to the floor and breaking, someone would inevitably pipe up with, "Jon did it. It's Jon's fault." Which would evoke smiles and memories of Jon. Of course, in my nightmares, Jon is a pain in the ass as he always was in life when it came to his abuse of drugs. I was on his butt constantly about it and he would intentionally flaunt it in my face when he was wasted just to show me that he could.
Remember your sister's valiant fight, and as was said, honor her memory. The American Cancer Society's "Relay for Life" fund raising event is coming up in the near future - the 24 hour walk to raise money for cancer research. Possibly that could be something your family could do together in your sister's memory. It may be too soon. Or it may be just the right time. My understanding is that it a very positive and healing emotional experience for the family and friends of those who died from cancer, and it starts out with the first lap walked by survivors of cancer. It is very scripted to keep it flowing and inspirational to remind people about the contining fight against cancer.
But back to today. I am, again, so sorry for your loss.
Judy