It means you're not when you're not learning how to be capable and competent with most standard types of cameras. She won't be learning how to expose, how to use different focal lengths, how to balance aperture with speed with iso, how to print a negative, how to edit, and worst of all she's dealing with a image ratio that is definitely substandard. You can buy very good old slrs for cheap, the de facto film student standard K1000 is a excellent learning tool that would provide her with a lot more control over the camera and her pictures than a polaroid does. That's what you go to photography school for, to widen your skills on all fronts. To learn and use all kinds of different equipment and know which is better for which job. Not to allow technical or artistic complacency.