Born in Poland, Graza attended class of drawing and painting to the Academy of Arts of Cracow. It is there that she meets Kas, the future draftsman of the series "Hans", who will become her husband. She works then as scenographer for Polish theaters, before following Kas in Belgium to come to settle down in the Western Europe, as Rosinski before him. She since colorized all the series " Halloween blues " realized by KAS. She is the author of the stakes in color for the series Thorgal, The lament of the lost moors and The big power of Chninkel.