Hello Friend, Good that you are seeking a help here. You must be going through some emotional battle due to stress caused by career or family or relationship issues. That is triggering such behavior and depression. Better to take a professional counselling help to first open up to share your concerns and feelings. It will help you to unearth the real root cause behind this problem and also a suitable solution.

Feeling low, having crying spells, sleep and appetite disturbances, and difficulty in concentration and attention are some of the signs of Depression. Consult a Psychiatrist for a detailed assessment. It is likely with medication and counseling the symptoms will improve. If she is feeling suicidal or hopeless consult a Psychiatrist immediately.