Is anyone familiar with Narssisitic Personality Disorder?

[Blue_Roses]

I have a sister who is showing signs of this and we (our family) is in desperate need of advice and guidance. I have ADD and I always thought she probably had it too, however, she has always been secretive about things and recently we found out some things that threw us all for a loop.

I have two other sisters and my mother. My dad is dead so between me, my sisters and mom (the brother-in-laws have tried to help too, to no avail) we feel like we're all she has. She's fifty-four years old, divorced (four years ago) after fourteen years of marriage and she has been dependent on her ex-husband for financial support since their divorce. (no alimony in divorce agreement) She was raised in a middle class home, but always wanted live like she has a champagne salary, but actually has a beer budget. She has a two year degree and has worked as a legal secretary, but mainly she has been "kept" by men with money. She has always been very pretty and has used this to her advantage, but now with age it just isn't working for her like it did in the younger days.

Here's the problem: her ex-husband has cut her off financially. He said , "he's done with her." He's engaged and has told my sister to make it on her own now. She has blamed him for everything under the sun. She is back living with my 87 year old mother, and has been horrible to her. She is rude, verbally abusive and very moody. My mother is taking it all in stride, but we know it's killing her inside and to watch this is killing us. My other sisters and I have all taken a different approach with her. None have worked and it's becoming very hostile between her and my other two sisters.

I could go on and on, but for now that's the jest of it...much more later. I have checked on Borderline Personality Disorder and this. Any help, guidance, feedback would be MOST appreciated:)