I am so very sorry to hear this. I will be praying for you and yours. I am so speechless and kind of agreeing with Zoe, I dont understand why this happens to lil angels....makes no sense. But on the other note, I had to explain to my daughter when she was 5 about her aunt. She was with this aunt everyday for 5 yrs of her life, and my aunt lived for my daughter. But when my aunt passed away, I just told my kid that God has angels all over the place to help him to do his work, watch out and protect people and he needed another angel to help him. But that Aunt Sally would be up there watching over her and that one day she will see her again. She was ok with that, and here's something that helped her deal also. My kid and aunt would always make mudpies and so on the anniversary of her passing, every year me or my dad would let my kid make mudpies and we would take them to her grave and she would sit them down and for some reason, there was always some wind start blowing or something to get our attention and I just told my kid, thats Aunt Sally telling you thanks for the pies. It seems silly but it worked and has worked.
And I am a good listener and I will gladly talk if you need to.