Wow. That is simply unacceptable. You cannot find a reputable health organization or doctor to recommend that little calorie intake. The only diet I am even aware of to recommend so low is the HCG diet, which has its fare share of critics and for good reason. Even Biggest Loser contestants consume about 1200 calories a day. While dieting, 1500 is appropriate for most people.
I will not be modifying this phase substantially, perhaps by consuming her recommended breakfast and lunch options and then enjoying a sensible vegan dinner.