T.T.
I've had the same issue with my daughter (she just turned 10). I've tried keeping her busy with other friends and things to do, but I also had a discussion about her "choosing" the right friends. Someone that has the same "values" etc that we have so that she doesn't take a chance of turning off the path so to speak. I know it's hard for them at this age to understand, but I found that with a "little" (and i mean little) push, she started going towards other friends. I hope this helps and good luck!