
At eighteen, Saint Phalle eloped with author Harry Mathews, whom she had known since the age of twelve, and moved to Cambridge, Massachusetts. While her husband studied music at Harvard University, Saint Phalle began to paint, experimenting with different media and styles. Their first child, Laura, was born in April 1951.
Saint Phalle rejected the staid, conservative values of her family, which dictated domestic positions for wives and particular rules of conduct. Poet John Ashbery recalled that Saint Phalle's artistic pursuits were rejected by members of Saint Phalle clan: her uncle "French banker Count Alexandre de Saint-Phalle, ... reportedly takes a dim view of her artistic activities," Ashbery observed.However, after marrying young and becoming a mother, she found herself living the same bourgeois lifestyle that she had attempted to reject; the internal conflict, as well as reminiscences of her rape by her father when she was only 11 The Guardian 1999 caused her to suffer a nervous breakdown. As a form of therapy, she was urged to pursue her painting.
While in Paris on a modeling assignment, Saint Phalle was introduced to the American painter Hugh Weiss, who became both her friend and mentor. He encouraged her to continue painting in her self-taught style.
Niki de Saint Phalle
She subsequently moved to Deià, Majorca, Spain, where her son, Philip, was born in May 1955. While in Spain, Saint Phalle read the works of Proust and visited Madrid and Barcelona, where she became deeply affected by the work of Antonio Gaudí. Gaudí's influence opened many previously unimagined possibilities for Saint Phalle, especially with regard to the use of unusual materials and objets-trouvés as structural elements in sculpture and architecture. Saint Phalle was particularly struck by Gaudí's "Park Güell" which persuaded her to create one day her own garden-based artwork that would combine both artistic and natural elements.full source, http://en.wikipedia.org/wiki/Niki_de_Saint_Phalle