This is a situation no one can truly imagine unless they've experienced it. My heart goes out to whomever you know that may have experienced this horrific act.
An important thing to remember and this is most difficult when facing any kind of a tragedy is that these types of things are not of God. Unfortunately, Man has free will and due to that free will, they are able to make choices...good or bad...without His interference. The truly saddening thing is that Satan takes full advantage of this and puts incredible evil into some hearts. While most rebuke and reject it, there are those who are weaker and fully embrace it. This is why we have so much violence in the world today.
God truly weeps for all those who are harmed in this life. I cannot imagine that He does not want to intervene in every instance. But, that would take away all of our free will. Thankfully, for every wrong act, there are right ones. This will be remedied in time and I honestly believe that those who harm children have the most to answer for when our judgment comes. So, should this offender not receive proper justic here on Earthy, he/she WILL receive it on the final day.
Now is the time to hold true to your prayer and faith. Satan will use this very opportunity to throw your anger towards God and neglect to notice it was Satan, not God, who put this evil onto this person's heart. If you turn away from God, then Satan wins. To truly win this battle, you must pray more than ever to God. He understands your doubts, anger and questions. His angels are there and ready to help give you comfort and strength for the days to come. Everytime we choose love rather than hate, Satan loses another battle.
I've experienced tragic situations in my life, also. In every instance, you have that feeling of a hole in your heart and an emptiness in your soul. I understand how much this affects a person's ability to remain faithful. But, when you accept God's tenderness and support, then it actually DOES help with the pain and confusion. God will help us through all these things and it's incredibly important to help our children remain faithful and help them to obtain healing from such tragedy. We cannot allow what evil is done to continue in their lives as a result.
I'm not certain if this helps you, but I hope it does. It breaks my heart that these things occur in our world...especially to our precious children. May God watch over you and all those affected by such things, always.
God bless you.