Delivering only the best images from a shoot is standard practice.
Photographers take a wide range of shots on any assignment to deliver the best results. However, this doesn’t mean that the client will see all of those shots. Typically the photographer will select the best compositions for editing and final submission. Shots that are discarded can include those there individuals may be blinking or momentarily not their best, images where the lighting was poor, blurred and shaky photos (yes, it happens even to the pro) and any images that do not meet the photographers high standards.