Yes, this is the easiest way. If this iPod has a large HD, then simply drag your iTunes library (probably my documents/my music/ itunes music) to the iPod. Then plug said iPod into the MBP and open iTunes. Then drag said folder to iTunes. Or, you can open iTunes on Mac, and say File-Add to Library. Then select the folder containing your music. After it's done copying, restore your iPod to sync from the Mac. Obviously, authorize her computer to play purchases if you've bought any.