I am sure you did the right thing!
I am very tempted to call the RSPCA (UK) on one of my nieghbours, their poor king charles spaniel is ALWAYS outside... rain or shine, no shelter. Makes me cry.
Is the animal control you called a no kill shelter?
No but I wish it was. I called the city, but because they are labs, they will call a lab rescue. That's if the mom is healthy. The lady said she was so emaciated it looked as if she were dying.