please don't judge

Hello, I add this anonymously just for person reasons and the fact it's about to become very messy. Three years ago I met a man well call him D. I was thirteen when I met him. We were just friends since he was 19. We'll we became  a little more then that. The next year his daughter was born well call her A. Well he has custody of her . Well we dated for awhile and broke up. A's birthday is kinda coming up. So since her mom is in jail. I was going to obviously get her a present but I can't see her with out her mom. He had said he's not throwing her a party so I've been kinda worried. I started looking into it. He looks like he's back on drugs. His sister and me are friends kinda we don't speak. But I called her and she said she wanted me to sit down. That his new gf is abusing A. Witch I started crying. His sister in law can't come clean. I was crying, and she told me that he wouldn't piss positive. I've been up all night thinking about this. Now that you know the back story