Speaking to his parents

So I have a friend sort of who I grew up with. He's 12. He grew up as a Christian like me . I'm 20 . And I see him as my brother. Every day he puts things on his Instagram notes , songs. Bad ones like this I'm so Hood by G Unit and yes I checked because he put it now. And I dont know these songs and I am at my limit. So I decided to tell his mother. I messaged her and called her about it. Now of course I'm doing this in a place of love and kindness and to help him grow with Jesus . Now I'm wondering , was it bad of me to tell his mother? Was it bad of me ? She was relieved I told her because she doesn't have his username and know about it. But was it bad because I'm thinking deep down if it was any of my business ? Of course I know that that could be the devil trying to say oooooh why you did that that was none of your business. But I wanted to help and it was out of a place of love not gossip. Mind you these songs everyday had F words and about naked girls and their butt's. He's 12. 12!!!