«Selten kann man ein Buch so rückhaltlos, das heißt schadenfroh und unangespannt lesen; selten bekommt man auch die Essenz derart unkapriziös geliefert.» --Nürnberger Zeitung
«Ein ungemein packendes Buch, das man in einem Zug durchliest und wirklich bedauert, wenn es zu Ende geht. Nicht nur das Aufeinandertreffen zweier Künste, sondern das von Mann und Frau, von intellektueller Härte und naiver Weichheit, von hell und dunkel läßt einen nicht mehr los. Zumeist sind ja Fortsetzungen enttäuschend, hier sollte aber ruhig "weitergemalt" werden.» --Die Zukunft, Wien
She was the daughter of a doctor, while her great grandmother was Carola Seligmann, an opera singer who died in the Theresienstadt concentration camp.
Schwaiger studied two semesters of Psychology, Germanic and Romance linguistics in Vienna. In 1968, she married a Spanish Officer, and moved with him to Madrid and then Mallorca before divorcing him four years later. She then attended the Pedagogic Academy in Linz, where she played part-time in cellar theatres and worked as a production assistant at ORF (Österreichischer Rundfunk - Austrian Broadcasting).
Her first novel, Wie kommt das Salz ins Meer? (1977) (How does the Salt get in the Sea?) became a sensational bestseller which sold several hundred thousand copies throughout the German language region. The heavily autobiographical first-person story tells of the monotony of everyday married life and of unsuccessful attempts to flee this world. In 1988 the novel was dramatised in a German film by Peter Beauvais, starring Nicolin Kunz and Siemen Rühaak.
Although her later works did not achieve the success of her first novel, Fallen lassen, a report of her experience in psychiatry, was met with critical acclaim.