Do you know if these others who she barks at have pets of their own, specifically dogs? Or if they have come into contact with other animals? Not as if that’s an excuse for barking, but I know ours sometimes will get overly excited if he smells a certain type of dog he really doesn’t like. And sometimes he just gets excited and barks if the people around him give him a certain look (a COME AND PLAY WITH ME or I’M SCARED look)…I’ve noticed he’s picked up A LOT on signals given by people.
Do you ever have her sit/stay, and have people approach with the backside of their hand? Sometimes that’s less intrusive…ours is still learning this sit/stay technique…hope all is getting better with your situation! 🙂