My heart aches .... help

There was a fire in my neighborhood yesterday about 4 houses down from mine. I arrived home to find the fire had just started. I saw a couple neighbors and asked if anyone was inside they replied "we are not sure it just started" I panicked and jumped out of my car and went up to the burning home. I was met by a young man who was covered in black stuff from head to toe and he looked to had been crying. I want up to him and I said "Are you okay? Is there anyone inside?" he said my niece is inside she is 4 yrs old. my heart sank and I just told him to stand on the street and to remember where she was. His English was very bad and he couldn't make a lot of words out but all he could make out was "my niece, shes 4 and in the living room". A group of neighbors including myself attempted to go in the house to look for her. we where unsuccessful because the smoke and heat was to intense. About 5 minutes go by and the whole home is engulfed in flames. we couldn't do anything else but watch in shock. firefighter came about 7 mins after I got there from start to finish. later that evening I had to speak with the captain of the fire department and he informed me that the little girl was safe and not home. the parents had picked her up while he was napping and took her to relatives. he ran back inside the house to look for her and passed away. we where the same age, I spoke to him alive and fine. not even 10 minutes of the firefighters being there he ran back in. No one saw him and knew until it was to late.

I cant stop thinking about his face and what he kept saying. please i need some help or guidance on how to move forward. i am a mother of a 2 year old and being strong for her lately has been hard. I'm very saddened by his death and im not exactly sure why its hurting me so much as I did not know him. I just keep think about all the different ways it could have gone.