As you can see in several of the responses, "artistic nude" is frequently used to describe what might also be called "figure studies." The lighting is up to you and I'm sure you can handle it, having seen your site.
However, it occurs to me that the model may be using the term in a somewhat different sense. I've seen some models use that to describe their comfort limit in posing - "artistic nude" being nude, but not explicit with respect to genitalia. (For example, Doug Lester's work, while sometimes highly sexual, never - insofar as I recall - shows the model's genitalia explicitedly.) She may not actually have a particular photo in mind, but is simply setting her limits.
I suggest - as did someone else - that you talk with her further about what she wants to achieve. Enjoy.