I've never worked with a nutritionist, but perhaps it would be worth your while to call the office back and tell them specifically what kind of information/assistance you're looking for from the nutritionist. Be frank but polite that you're interested in something different from, or in addition to, a menu plan and ask if they work for clients in that manner. If the answer is "not really" or a grudging "yes," then tell them that you think it would be better to seek assistance elsewhere. It could just be that this is the default approach that the nutritionist takes because most of her/his clients simply want to be told what to eat.

Again, I don't know what's standard in this area, but I've learned over time to be more assertive (but polite) even when it comes to the services that I get from people like doctors, PTs, therapists and the like. I realize they're the "expert," but it's my body and my money. I make sure I state what I want and need out of the relationship.