Playing sports with an ICD

My daughter was 15 yrs old when she went into SCA back in April of 2009. She ended up having an ICD implanted in her chest and is on atenolol. The genetic tests do not confirm any specific arrythmia and the interrogation of her defibrillator every month shows no vt's. My daughter wants to play sports again, volleyball and softball for the last two years of  high school. Are there any other survivors out there that play sports still with an ICD? If so, have you been shocked?