So this isn’t related to my SKs but I’m wondering if anyone has been in a similar situation?

I have a daughter who I share with my ex. She’s been coming home more and more upset recently. My ex (who is a piece of work) has been beating his dog regularly in front of her. He’s also been using biting and pinching as a form of punishment on her younger half brother (a toddler). I’m certain he’s smoking pot in the house, and driving high (with the kids in the car). The mother of the little boy finally wised up and left him and he’s the only person in the house with these two little kids, which worries me constantly.

I had a long and horrible custody battle when I called out his violence and drug problems and it made no difference to the custody he got. So while I would like to act on this info I’m worried that:

A) it will make absolutely no difference in the custody he has of either of his kids.

It will come back and bite my daughter as she is the only person who could have relayed this information. 

I feel horrible for this little boy, as I feel like this is abuse. I also think it’s emotional abuse for my daughter to have to witness these things.