Hello Thanks for writing to us. I have a few questions to ask. 1.Does she attend her periods regularly? If not, then this may be the reason of pitting weight. Check it some good gynecologist. 2.How are her eating habits. Does she eat large foods including snacks and fried foods? 3.Is she on frozen foods? If so then cut them from her diet and give her a regular planned diet rich in fibers. Ask her to take plenty of fluids. Coconut water is a great choice. 4.Does she take too much tension and is more towards depression? If so then please help her and take her to a good physician. 5.women diagnosed with polycystic ovarian syndrome (PCOS) may also experience weight gain. 6. Is she vitamin D deficient? Get it checked. It is usually less in women and hence leads to unexplained weight gain. Take vitamin C rich diet. I hope I have solved your query. If still persists anything in your mind to ask then feel free to write me back. Thanks Dr. Tripat Mehta