 In 1759 , peace negotiations at The Hague came to nothing . The series of Franco @-@ Austrian losses were reversed until , in 1762 , the Empress Elizabeth of Russia died . Her successor Peter III greatly admired Frederick , and at once withdrew Russia 's support from the French coalition . Prussia began a drive to expel the Austrians from Saxony , and the French from Hesse @-@ Kassel . Though she was only partially successful as her own forces were exhausted , the conflict had essentially descended into a costly stalemate , with Maria Theresa no longer believing that she could retake Silesia . The peace treaties of <unk> and Paris exacted harsh terms from France , as she was forced to relinquish most of her American colonies . For Austria , though , the result was the status quo ante bellum . 
