She already has 3 months of experience! She’s good to go.
Why don’t you start by directing her to this site. Tell her that it is not the camera, but the person behind the camera that takes the photos. That person needs to have knowledge about composition, light patterns, exposure, color reaction to light, posing, use of camera equipment, use of camera settings, post processing etc. This might look as a long list but it is only the basics you need to know in order to charge people for photography.
It is better to explain to her that people have eyes and can distinguish bad photos. If she is to get a bad reputation early on for showcasing bad photos, it is much harder to recover and will probably end up here with the rest of the atrocities in the main YANAP page.