She still may sound a warning growl if she thinks I'm annoyed with her and approaching. She has to wait until I say it is okay for her to go outside. This prevents her from dashing out the door as soon as anyone opens it and she looks to me to give my okay. It's all blah blah until they begin to pick up patterns. If you or other family members allow something one time and not another, the inconsistency will confuse the dog.
Consistency is safety and security.
The dog can identity your expectations more readily and be more able to please. It can be exhausting to train a pet, but consistency and immediacy makes it a lot easier. I learned to not let a training opportunity go by. Always praise or correct. Always use the same language structure.