am so very sorry to hear of your neighbor's loss...and I am sure he was pretty much like an ADOPTED son to you as well. I know he would be to me.
There are no words that can take away the loss or pain, but I want you to know I will be thinking of you and the family, our prayers are with you all.
YES, you do what you need to do to help this family get through this. They are blessed to have you in their lives at this time.
We [this group] can wait, we are NOT your top priority at this time. Thank you for sharing this with us. Take care and if there is ANYTHING I can do to help you or for you, just say the word.
See you when you get back.
May God Bless you and the families of the boy who has passed.