When our marrema was a pup our dobe would put him in his place and sometimes he would run off yelping and she would end up with a mouthful of fur, this went on until recently Bundy is nearly 2 yrs old and he is the boss ,he started to stand up for himself although he didn't start any blues with Elly our dobe ,she is 5 yrs old,they now seem to have come to an agreement,no more fights, I think your girl is just asserting herself over the newbie ,puppies tend to yelp at the drop of a hat anyway so as long as she is not getting stuck into the pup i would just keep an eye on them.