I was in the same boat as you. I was considered the “bad girl” in my school until my mom found out (or so she thought). She found out and instead of her treating me like a human being, she just put me down and yelled at me. Did it help? NO. Did it make me worse? YES! I was outside on the streets till late and I didn’t care… Lucky for me, one of the guys I bumped into came from a traditional family and with his help, I became a “better” girl. We both helped each other get out of it. He never used to go to shul or go learn and now he goes to shul almost every day to pray and learn. After 3 years, I’m finally engaged to him 😉 Can this have ended up much worse? Yes. I was very lucky to meet him and I stopped talking to all the other guys I spoke to (even if it took a year.)
Was it wrong to snitch on you? Definitely. But you can’t change the past (my mom treated me bad too. In fact, she was encouraging my school to do the same. Eventually she thought I stopped even though I really didn’t.) Hopefully you can continue going in the right path. I agree with mikehall about getting in touch with Rabbi Wallerstein.