How to help someone when they dont think they need help?!

Best Answer - Chosen by Voters

Listen up man they don't even know you boooorn

Your sister is the middle child and is acting out because of something that has happened in the family while she was growing up. And so part of it is attention-seeking behavior and part of it is depression.
The reason why she likes to think of herself as an adult is because her needs as a child have not been met and so to keep on living like a child is hopeless for her. In her mind, living like an adult puts her in charge and she is no longer dependent on the adult who is supposed to assume responsibility for her.
However, she is unable to assume the role of an adult yet because her age limits her ability to get a job and support herself. She doesn't have an education, even a high school diploma, and so the prospects of a job are very limited. And to get money for what she wants, she steals.
Your sister has a very bad personality disorder. Personality disorders are formed in childhood as a result of abuse and/or neglect. And the patient (your sister) learns inappropriate ways of responding to things and inappropriate coping skills. She will need a lot of long-term therapy to learn new life skills to replace her inappropriate ones.
And so, your sisters needs weren't met in the past and they are not being met now. And so perhaps long-term hospitalization in a well-structured inpatient environment would be able to give her what she needs and teach her the life skills she didn't get on the way growing up.
I wish her and your family all the best.