I have been praying for you and your family. We suffered a loss in our family, nothing compared to yours, but what I learned from it, i hope might help you in the future. My wife and I went to counseling. The counselor was in the the high council in a nearby stake. He told us about the steps of the grieving process, and he warned us about the anger step. He said if we make it past that one as a couple. We would experience growth as a family.
I thought it was strange at the time. My wife and I were both grieving, and blaming ourselves. Yet a week or so later, I was thinking about what I could have done to avoid the loss, ( for the 1,000th time). Then it suddenly hit me like a bolt of lightning. It wasn't my fault. It was my wife's fault. If she had been a better mom, this wouldn't have happened. As my anger grew, I thought of all her faults and failings. Then the words of the Counselor came back to me.
I realized the thoughts for what they were. Just a step in the process. It helped me get past the anger stage more quickly, without damaging my wife or our relationship. I can see from your picture that you have a beautiful family. I will keep you in my prayers, for a later time, after the love and support begin to diminish, and you are left to forge on ahead. If you are like me, that will be the most dangerous time.
Garnet and I made it past the grieving step and our family grew closer together because of it. I hope the same for you.