Not knowing this for sure--just a guess, but she could be reacting to the stress of detoxification.
Get her off of a high carb diet (greatly limit all sugars, starches and grains)---Get her eating more quality protein and fibrous vegetables. Get her better hydrated (1/2 her body weight in ounces in water each day). Also get her on a vitamin D supplement. I am partial to emulsified forms, as these are better absorbed and can bypass (common) biliary issues. 4,000-8,000 IU per day is not unreasonable. If you're concerned about toxicity, then get her a 25, Hydroxy-D blood test. She should optimally be between 60-80 ng/dL. Get her on a quality magnesium supplement. I usually recommend magnesium glycinate as a highly bioavailable form. She should take it to bowel tolerance. Finally, you might also want to get her to start doing green drinks. Someone here said you could get NanoGreens by going to http://www.nano-greens.com,