I called the cops on my aunty for not feeding her kids and having them clean the house at 11p.m on a school night.
Oh wow, do you think you could ever see yourself doing that to your kids?
No way! I am a responsible person so I'd like to think that I would be a good parent.
Well, I'm really happy you did that. Those children were being neglected and they needed someone to protect them. It's a good thing you were around to do so or who knows what would have happened to them.
I'm glad too. I think I am doing the right thing by calling the cops on that piece of shit.
Just be ready to help those kids any way you can.  Let your relative know how they feel and if they are truly willing to change, help them too by keeping them accountable.