It is semi-autobiographical and inspired by her life following the death of her twin sister Jenny in a traffic accident at the age of thirteen.
[3][4] In the autumn of 1990 Gieth, then aged fourteen, wrote to her favourite author, the established writer Peter Pohl, wondering if he could help her writing a book about her grief and life following the death of her sister.
[2][5] The book has been translated into German, Danish, Norwegian, Dutch, Finnish, Icelandic, English, and Slovene.
After the German translation was published, she also received the Deutscher Jugendliteraturpreis in 1995.
[6] In 2011 her book was adapted into a motion picture, Jag saknar dig (I Miss You), directed by Anders Grönros.