I straight up told my daughter she got karma

I didn't raise my daughter during most of her teen years because I was losing a battle with cancer and was so sick. I honestly should have been dead... My daughter at some point in her teen years became very bitchy and catty. My sister took care of her while I was sick and my sister was such a bully in High school. So my daughter was bullying people left and right and my sister was teaching her to be stuck up and I had no idea because I was on the brick of death! She's in college now and is 21 and was fucking with this girl like a high schooler and I found out through my sister because she was bragging about messing with this autistic girl and she won't do shit because she's *Rword* I got on my daughter's ass so bad! But she said she's an adult and doesn't need me. Well... That girls mother ended up beating my kids ass and how I found out was she called me crying saying what happened. I straight up said "That's Karma. Leave that girl alone". Well I haven't heard anything and neither has my sister about her bullying. In fact she's now being more focused on school and respectful toward me. She learned a lesson a hard way but lesson learned. Maybe I'm a bad mom for saying this but in the end she smartened up.

Edit: So the person assuming I'm not active in my child's life. I beat cancer when she was 19 and at the phase where she wasn't going to listen to me. I tried but she already decided shes gonna do whatever he she wanted. My daughter is grown and reaped the consequences of her own actions. If you think 19 year old will let you parent them then maybe you dont have an adult child. I couldn't nip that shit because she kept pulling the I'm grown bullshit. So I'm gonna hold an adult accountable for her actions.