Am I a bad person?

I had a friend who recently had a baby in December. We were close when the baby was first born and I was always watching him and I LOVED him. However, he did not have good parents. Dad cheats on mom and got 2 other girls pregnant and is abusive. Mom lets baby live in a disgusting house (10+ animals, hoarding, strong urine smell) and doesn't see a problem. We recently had a falling out where she accused my fiancé of being a child molester for absolutely no reason other than to hurt me (he's great with kids and she herself said he's a better dad to her baby than the baby's actual dad!) because some other girl decided to say I was talking shit when I wasn't. I had been contemplating calling CPS even while we were friends but finally decided to do it when we stopped being friends. I knew in my heart I was not being petty and I genuinely felt this was the best thing so he could live a good life. Fast forward a month and she had to clean her whole house and couldn't let baby be there for a week. She tells me I'm a horrible person and that every bad thing that has happened to me was deserved. The baby got upset having to be in a different house while they cleaned it and threw tantrums so she claims I just wanted to hurt him. I didn't show it but I did feel bad. Am I a bad person for this? I love and still do love that baby but she makes it out like I never did, that I used him to "play house". J