Inferno you would have been a phenomenal Uncle, and I'm sure for the time your little ones were in your life you already were. I'm so deeply, and truly sorry for your loss and I offer my sincerest sympathies. I have 2 nephews as well, both are 11, and a niece of 8. I've been through my fair share of painful times with my little babies, but nothing compared to this. I'm praying for you, your family, and the parents of those two sweet little angels.
I hope you at least find some comfort in knowing they're in a better place, a much better place than we are.
I'm keeping your family in my thoughts and prayers during this trying time for you.