Your sister is very lucky to have your thoughtful and loving care. Her lethargy, sleeping pattern, and eating behaviors along with her feelings of helplessness are typical indications of a depression. While I certainly can’t diagnose your sister for an email — I can say I understand why you are feeling the way that you do. Being around someone you love who can’t control their basic needs is a scary thing to watch and feel responsible for. I understand how difficult it can be to carry this burden when your parents are so far away.
Yet, this might offer the very way to get some help. I’d encourage you to make an appointment with a therapist to talk about the struggle you are having dealing with your sister. The reason for this meeting would be for you to explain your worry and how to best help cope with your concern and anxiety for your sister’s wellbeing. Once you’ve made the appointment then invite your sister to come and help you in the session. Let her know you need her to explain what she is experiencing with you being worried so much. Your sister may not be willing to help herself/ but she just might be willing to help you by attending one session.
A skilled therapist will be able to understand the issue very directly and may be able to offer some guidance and options for your sister. Helping you might get her in the door and in front of a professional who could help suggest where these behaviors of hers are coming from. The Find Help tab at the top of the page can help you find one in your area.
Wishing you patience and peace,
Proof Positive Blog @ PsychCentral