My heart truly goes out to you, your sister and your entire family...as I know first hand what it's like to lose a son...and know the pain and sorrow that you are all experiencing.
It's a tragedy what happened and I hope that all of you will find the strength somehow...please know I will be praying for the family...
What a horrible tragic story and my heart aches for your sister and your family. I hope you can all find the strength to get through this tragedy together