I really think it is still too early to do this with distractions. Going too fast can very easily set you back. It takes time to condition her brain. You don't want her to have to think about what to do with this one. You want her reaction to become automatic. So you need lots more repetitions until she could do it in her sleep, so to speak, before you make it even the slightest bit harder. I think I didn't call my dog when she was even the slightest bit distracted for a few weeks after we started and we practiced this lots and lots of times every day. I really think that is why her recall is so reliable now. I never, ever pushed her or made it too challenging in those first few months.