I kept this word since when i was a troublesome teenager. A book from Luise Rinser, Mitte des Lebens, became a landmark in my young time. The main attraction of the book comes from a ‘observer’. Nina’s Sister kept tracking about Nina’s life, mind, love and conflict around her life. Nina is very powerful character in the book. Schwesterseele stems from their relationship, which could be translated as ’sisters within one spirit’ or quirky side of twins. I must say, I need to investigate deeper about German root about this word, but this context tells me that there is contemporary thoughts or invisible connection between sisters or women even if they are living in the separate lives.