Welcome Slim, this couple sought Denise out for their special day. She didn't go looking for them. And she has explained her experience level to them. Her wedding package price reflects her experience level and was another deciding factor for the couple.
What Denise has going for her, is a very high technical skill level, an artistic and photographic eye that is better than a lot of so-called "pros". She also has an incredible thirst for knowledge and the aptitude to then apply that information. She has terrific communication skills and has already developed an easy going professional relationship with the wedding couple.
Everyone needs to start somewhere, this appears to be the perfect starting place for Denise and the young couple.
I also wish her luck and know she will do a fantastic job.