She certainly reflects sing s of depression, we need to know whether it's genetic or acquired. However she need help understanding and support plus guidance at this point in time please consult a competent doctor who can advice you further on this matter and treat the problem. She will have to be spoken to positively, sensitively, make simple suggestions of yoga, reading inspirational book, playing a sport or even aerobics elevates the mood. Relaxation techniques and deep breathing exercises would help too so would nature.

Loss of interest, decreased concentration and attention, feeling low and disturbed sleep or appetite are some of the signs of depression. Consult a psychiatrist who will assess her in detail. If she is feeling suicidal or hopeless, seek professional help immediately. Let her Try some relaxation techniques like yoga, meditation and deep breathing, Indulge in hobbies and Spend time with people close to her.