Kim has a poor appetite and has lost a severe amount of weight in the past few months. She is unable to concentrate or make decisions. She no longer wants to live and wishes to die. Psychologists are most likely to diagnose Kim with:

Depression

Explanation:

Everything happen to Kim could be treatment.. There is no reason to die. She needs to be strong to avoid the negative things that impact her thinking..Try to be happy, exercise and have good friend... If she keep doing the nice things , the good thing will come to her. I hope this partial ideas will help her to overcome this difficult time.