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Dr. Z
Dr. Z, Psychologist
Category: Mental Health
Satisfied Customers: 4510
Experience:  Psy.D. in Clinical Forensic Psychology with a background in treating severe mental illnesses.
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I have a younger sister who seems to be controlling and manipulating

Resolved Question:

I have a younger sister who seems to be controlling and manipulating my mother. This has been going on for a couple of years now. My sister is 53 years of age, mum is 81. Many years ago our small family were rocked by my sister dumping her toddler son on our parents doorstep and declaring that she couldn't raise him at the moment because her boyfriend at the time decided he did not want that kind of commitment in his life. In other words, he only wanted my sister and not her little boy. What we thought would only be a short period of time ended up being some 8 years or so and this act of selfishness has caused our family to become extremely dysfunctional. She did eventually take her son back but not before the damage was done. We have all been secretly suffering over this issue and with a diagnosis of breast cancer a year ago it ended up sending me over the edge because my Mum had become so close to my sister's son that she seemed only interested in him and not what was going on in my life. There has been no support from my mother or my sister during my cancer treatment and all of this stuff is just doing my head in. I am fairly intelligent, my sister is a very ignorant and immature person and it has always been that way. My sister-in-law seems to think that my sister is on some kind of guilt-trip and what concerns me greatly is that she seems to wield a great deal of control over my mother and is manipulating her into believing that the rest of us are bad people and that she is the good one. Because of my health I have elected to just steer clear so I can concentrate on being happy and positive but I still can't help worrying about my mother. My older brother and I could probably do with some advice as to how to treat the situation that we find ourselves in.
Submitted: 10 months ago.
Category: Mental Health
Expert:  Dr. Z replied 10 months ago.

Dr. Z :

Hello I believe I can help you with your concern

Dr. Z :

I am so sorry to hear about your health and about the behavior that your sister has been exhibiting.

Dr. Z :

It appears that your sister has been exhibiting traits of Narcissistic Personality Disorder (NPD). Individuals that exhibit this type of behavior typically only think about themselves, can easily manipulate others, have a grandiose version of themselves, and repeatedly fail to take responsibility. Here is a link that can provide you with more detail about this disorder

Dr. Z :

Unfortunately individuals with a diagnosis of NPD typically do not fair well with treatment because they do not believe that there is anything wrong with them and instead they feel that everyone else is wrong.

Dr. Z :

I think it would be possible to get through to your mother, but you have to try to isolate her away from your sister and have a family intervention of sort to help her see that your sister's behavior has been manipulative and that she has been trying to turn your mother against everyone using lies.

Dr. Z :

If your mother would agree to family therapy, that would be the best approach and it can help heal your family relationship, but your sister should not be allowed in the family therapy session or she will try to manipulate the session and dominate it. Your sister would need intensive individual psychotherapy before entering family therapy should even be considered.

Dr. Z :

In addition, this is a good link at extensions of individuals who have NPD and I think your mother may possibly be an extension of your sister's NPD behavior.

Dr. Z :

Also these books have great information on how to analyze the situation and interact with someone who has NPD.

Dr. Z :

So far you have been doing a good job at steering clear of your sister because in your fragile health you do not want the added stress of dealing with an individual who may have a diagnosis of NPD. But I think after you read these books, especially the first two, I think you will have enough tools to help you. Also I think consulting with a therapist with experience in treating NPD would be a good idea as well.

Dr. Z :

In fact if the therapist is willing to sit in on the family intervention of your mother, he/she can provide objective information about NPD behavior that your mother may find useful and help open her eyes.

Dr. Z :

I see that you are offline right now, but when you get back online I would be very interested in continuing this discussion with you and talking about anything further you would like to share regarding your concern, so if you respond in the chat box I will be able to get back to you as soon as possible.

Customer:

Thanks so much for your advisement Dr. Z. I am going to spend some time looking at the resource links you have provided me and see what might best suit my situation. I might have a talk with my brother about what you have said and I'll get back to you as to the outcome of that.

Dr. Z :

Anytime, I am always happy to help. I hope the resources help you a lot and I think talking to your brother would be a great start. My goal is to provide you with excellent service, so if you ever have any further questions or concerns please do not hesitate to contact me at anytime.

Dr. Z, Psychologist
Category: Mental Health
Satisfied Customers: 4510
Experience: Psy.D. in Clinical Forensic Psychology with a background in treating severe mental illnesses.
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