I am no expert on this, but could she be eating too few calories? I feel that 1,200 per day is pretty low, and the body could be going into conservation mode. That is a guess though.
Also, list what you are doing for activity/weight training/cardio.
Height: 5 ft. 9 in.
Weight: 245 pounds (6-13-2010)
Weight: 237 pounds (7-26-2010)