A.W.
I am so sorry to hear about this! It made me cry when I read it. This is, in no way, yours or your husband's fault! I commend your son for being honest enough to tell you and your husband; and commend both you and your husband for letting the authorities handle the situation. I do advise that you speak to your neighbors, especially those that have young children. Your counselor will be able to give you the names of support groups in the area. I'm sorry I don't have any wise advice or words that will comfort you enough. Counseling will definitely help everyone put the pieces back together. We will keep you in our thoughts and prayers! If I come across a support group, I'll pass the info along to you.
God Bless!