We find that keeping lots of fruit in the house can be helpful. Unless your daughter has an issue with yeast overgrowth, I would not limit her fruit. A good probiotic daily minimizes yeast overgrowth. Issues with yeast can contribute to the sweet cravings.
My older son never had the sugar cravings and based on what I've learned the source of my younger sons are due to a genetic predisposition for diabetes and problems maintaining consistent blood sugar levels. Giving him protein and healthy fats for each meal can be really helpful (note the theory that all fats are bad is a very health damaging mis-conception). A sign that this is an issue with your daughter is if she gets very cranky before meals and is fine afterwards - my son is Jekyll and Hyde in this regard.
Also, healthy snacks - quality protein bars - are very, very helpful. My kids like the Lara bars and Dr. Bonners hemp seed bars (there are also other brands of hemp seed bars and sunflower seed bars), which have dates for a sweetener and nuts. It is really important to always have protein when you have sugar to stabilize the metabolism of the dates and the natural fiber in dates minimizes the blood sugar impact.
Vitamin B1 can be helpful for maintaining good blood sugar levels. My kids like the Emer-gen-C packets which have a good balance of B vitamins and vitamin C. B5 and vitamin C are important for healthy adrenal function, which can have a huge impact on blood sugar. And, I mix the probiotic powder into this drink and they don't reject it - my younger son is ultra sensitive to herbs, etc.
There's also an exceptional powder product: Fatigued to Fantastic that has a great blend of vitamins and amino acids, but you do need to take Bs separately. IT does have dairy.
That all said, I don't entirely limit sweets, but with all the other food options, my sons are very good about limiting it to a cookie or two after dinner. I don't pack any sweets in their lunch boxes - just the protein/fruit bars and a pack of nuts, along with fruit cups, turkey or other protein (cheese sticks might be good if she can tolerate dairy) and baby carrots. It's also a mis-conception that baby carrots have a high glycemic index. The glycemic index was derived by using the same portion size/calories. Thus, a large amount of carrots are required to be equivalent to white foods (processed carbs, etc.)
I also bake with a high protein flour mix - 1/2 bean flour and almond meal, mixed with rice flour (or tapioca flour, corn starch, potato starch).
Here's a generally good list of foods that should be avoided (ignoring the fruit warning for the most part):
http://www.thecandidadiet.com/foodstoavoid.htm
Although, avoiding fruits for a period of time could be really helpful. Also, she should avoid all artificial sweeteners. They've found that they cause folks to keep that sweet craving. Stevia, an herb (that must be used sparingly) is the exception.
And, here's a good one that is recommended in terms of avoiding yeast and sugars:
http://www.thecandidadiet.com/foodstoeat.htm
The gluten is an important one and you might consider testing her for gluten intolerance:
www.enterolab.com
After avoiding sugar for 2+ weeks, your daughter will become far more sensitive to it and likely not find it as tasty. I know all of this first hand as I was a carb/sweet addict in my younger days.
That all said, with a resistant child, change should be gradual and the WHOLE family needs to buy in and participate in the diet change. It's not fair to expect your child to avoid bad foods and have others in the family continuing to eat them. Also, working with a GOOD nutritionist can be very helpful, since it can eliminate the power struggle - i.e., it's what the nutritionist recommends vs. Mom.
