I believe she lost her will to live due to her CANCER

Beside seeing psychiatric, you need to motivate her
For example, you can bring her to those NGO who help cancer patient
that share their recovery and treatment success story

https://www.facebook.com/cancersupport.my/
http://www.malaysiaoncology.org/section.php?sid=39


PLEASE MOTIVATE OR CARE INSTEAD OF ASKING OR GIVING INSTRUCTION