She barks viciously at the baby and teeny tiny dog that moved in next door. Not the adults, just the baby and the dog. It's not OK, but do you know what dog trainers do when you tell them that your sheltie/border collie has a barking problem? They say, "Oh, yeah, they do that." THEY DO THAT.
It's really embarrassing. Here she is, pretending to look innocent. She's not innocent.