There is no way she will continue to lose 30lbs per month though. The first month of any diet people will drop a very large amount of weight. Some of this is fat but a good portion of it is water weight and the weight people carry around in their digestive tract. Also remember the larger a person is the more calories they need, thus making it easier to drop weight quickly. If this women gets anywhere near a normal size she wont be seeing 30lbs a month roll off, she will be lucky if she gets 10.