In addition to school lessons, she attended the Rheinische Musikschule [de] in Cologne and the Robert Schumann Hochschule in Düsseldorf.

She has written articles for almost all German-language stations and texts for the Frankfurter Allgemeine, the Süddeutsche, Emma and the Kölner Stadtanzeiger.

Together with her husband she filmed 10 portraits of authors on this topic under the motto Nationality Writers on behalf of the former Ministry of Culture, Urban Development and Sport NRW.

Weissweiler is a member of the PEN Centre Germany and - after an interruption of several years - since the end of 2007 of the Verband deutscher Schriftstellerinnen und Schriftsteller in the Vereinte Dienstleistungsgewerkschaft, whose attitude towards right-wing extremism in her own ranks she has repeatedly and vehemently criticized.

As spokesperson for this association, she and her husband were for years the director and initiator of writing and photography courses for mentally ill people, the results of which were presented in many exhibitions.