Hi again,

Thanks for clarifying, yes I thought you had both of them. I am sure being separated from her housemate dog is also adding to her stress.

I would absolutely not use the bark collar. Under no circumstances is it humane to shock a dog for barking, particularly when the barking is stress related. She will never be able to relax and feel calm if she is getting shocked for barking. So, yes, I absolutely advise against using the bark collar.

The key is to wait until she isn't barking and reward that. I would use a clicker. Teach her that click = treat. One click always means that a click is coming. When she is being quiet, say "good quiet" and click and treat. Whenever you hear a noise that might cause her to bark and she ignores it say "good quiet" and click and treat. Honestly, the best way to deal with attention seeking barking is to ignore it, if you engage the dog, they are being reinforced and will keep doing it. If she is alert barking (like when she hears a noise) you can interrupt her (by saying "uh-uh" or, if she isn't sensitive to sound you could shake a can full of pennies) and the exact moment that she stops, click and treat her.

Please whatever you do, don't use the bark collar on her. Bark collars are inhumane and extremely confusing to the dog.