Stinkydog maybe it’s time for the chicken and rice again to get back to normal stool. The antibiotics take out all the good bacteria and it could have just caught up with her causing the runs. Maybe do not give any treats or chews and when her stool goes back to normal try VERY SLOWLY a different kibble. I’ve had great success with Stella N Chewy’s. My one chihuahua has a sensitive stomach and saw on their f/b page that many said their dogs that had same issues did well on their food. If you choose another food just go VERY SLOWLY with just maybe a few kibble thrown in to the chicken/rice for a few days or even weeks to get used to.
