Thank you for your reply.
It sounds like your sister also abuses alcohol and drugs.
Was she drunk when she urinated on your sectional?
It sounds like she has alcohol and drug abuse/dependence in addition to Bipolar disorder.
I also suspect that she may have Borderline personality disorder
(BPD) or Narcissistic personality disorder (NPD) features as she doesn't show remorse for her actions.
It's very common for people with Bipolar disorder, BPD or NPD to abuse alcohol or drugs.
Borderline Personality disorder is emotional regulation problems. BPD is a pervasive pattern of instability in interpersonal relationships, self-image, affect, and marked impulsivity. A person with BPD is intensely fearful of abandonment and may engage in impulsive and extreme behaviors to keep other people with them. Disturbances in self-image are often manifested as frequent shifts in career goals and sexual identity, while impulsivity is reflected in unsafe sex practices, reckless driving, financial irresponsibility, and substance abuse
NPD is characterized by grandiosity, need for admiration, and a lack of empathy. In mental health, people with NPD is very difficult to work with because they have low or no motivation for treatment (counseling).
People with NPD and BPD want only empathy, support and praise without any criticism. If you show slightest criticism, she may verbally attack you. She may be highly manipulative even in conversation.
He may have distorted sense of reality in order to defend herself.
Her narcissistic features may have a lot to do with mood swings, anxiety
, and depression.
She may need ongoing treatment - individual and group therapy and/or medication in addition to alcohol and drug addiction treatment (working with a certified alcohol/drug counselor) in inpatient or outpatient settings.
You may need help and support to associate with your sister. You may need to get support from a counselor/psychotherapist and/or your doctor. You may need to be patient with her behavior at times - angry outbursts and erratic behavior as she has this serious illness (Bipolar and/or BPD).
However, set limits with her behavior without high emotion. You may not change yourself to accommodate her behavior as she may try to manipulate you. Keep an honest perspective, especially in regard to your own needs. Develop friendships and social interactions with other people, making sure you are not sacrificing your own quality of life in your efforts to deal with your sister.
If she is dangerous to herself or the other OR is unable to take care of self due to mental disorder or alcohol addiction, ask her to go to an emergency room of a local hospital. If she does not, call A LOCAL MOBILE CRISIS TEAM or PSYCHIATRIC EMERGENCY RESPONSE TEAM designated by her city and county for psychiatric evaluation and involuntary hospitalization. If she is in crisis now, seek help immediately. Call 1-800-273-TALK (8255) to reach a 24 hour crisis center or dial 911 for immediate assistance.
Please let me know if I have overlooked any or you have more questions even after you get my answer.
All the best,