Her behavior is unusual and indicates that something may be wrong. Since you have yet to ask her what’s wrong, that’s the best place to start. Be honest about your concerns. Tell her that you want to help.
You and your family could do this together or individually depending upon how well each of you relate to her. For instance, if you and she are close, perhaps she would be willing to talk to you over another family member. Maybe she’s closer with her twin sister than you. Discuss your options with your family and try to determine the best approach.
You should also strongly encourage her to consult a mental health professional. Do what you can to help her and to encourage her to seek professional help, but recognize that there may be only so much that you can do. If she’s unwilling to seek help, then you and your family should consult a mental health professional for advice. They can help you strategize and make a plan for how to help your sister. Please take care.
Dr. Kristina Randle