Bike Fit

My friend received her first bike as a present. After rides, her shoulder, arms, and hands are in extreme pain. Pretty obvious its the bike fit. I told her to go back to her LBS and get the fit adjusted. Comes to find out, when her parents bought her bike, the bike shop fitted the bike to her mother because she is "around" the same size. Ya, I know, I rolled my eyes too. So basically the LBS said there is nothing they can do for her, they claim they can't fit her bike to her. She didn't say if it was too big or small, she mention they can "try to bring her handlebars in" bur there has to be something that can be done. Btw, there is only one LBS in her town, so I turn to all of you for some advice to help her out, Thanks in advance