I agree with the dominance issue. She needs to show the pup who' s in charge between the two.
The rolled up paper deal is a matter of choice, but the main thing is to be the agressor. You don' t have to be crule to show a dog his place, but a good swat on the nose lets him know you ain' t gonna take it.
You also have to speak the dog' s language. I' m not saying to bark and growl (unless you want to [&:]), but the tone of your voice and body language are what a dog keys in on. My GSP will be submissive to anyone, male or female, who puts their foot down, so to speak.
As far as the newspaper making him gun-shy, well, I guess that depends on the dog' s own personality. If you don' t want to risk it, that' s ok. My GSP is afraid if vaccume cleaners, lawnmowers, and just about any loud machinery, but she' s not gun-shy. And I RARELY use it anymore, but just the sight of a rolled up newspaper sends her to the corner.