In 1811 she was secretly married to a young Italian officer, Albert de Rocca, a handsome man of twenty-three—she was then forty-five. In him she realized the conditions which she described in Delphine, namely, a man who braved an opinion and prejudices; and she was ready to submit herself to him, Coppet became the centre for endless pleasures and fêtes; Mme. de Staël began to write comedies and to forget Paris entirely. This blissful happiness was suddenly checked by the emperor, who determined to show his displeasure and also to give evidence of his power by banishing Schlegel and exiling Mme. Récamier and De Montmorency, who continued to visit Mme. de Staël. Fear for the safety of her husband and children influenced her to leave for Russia, where the czar ordered all Russians to honor her as the enemy of Napoleon. Indeed, she was everywhere received like a visiting queen.

In the autumn of 1816 she returned to Paris, and spent a number of months very happily in her old style—in the society of the salon. Though devoured by insomnia, enervated by the use of opium, and besieged by fear of death, she accepted all invitations, and kept open house herself, receiving in the morning, at dinner, and in the evening; and though at night she paced the floor for hours or tossed about on her bed until morning, she was yet fresh for all the pleasures of the next day. But this mode of existence was undermining her health.

She endured this constant strain until one evening in February, 1817, when, at a ball at the Duke of Decazes's, in the midst of her pleasure, she was stricken with paralysis. At the Rue des Mathurins, she had all her friends come and dine with her. Chateaubriand, who was one of the party, entered her room upon one occasion and found her suffering intensely, but able to raise herself and say: "Bonjour, my dear Francis! I am suffering, but that does not hinder me from loving you." She lingered until July, when there ended a life which not only influenced but even modified politics and the institutions of nations, which exercised, by writings, an incalculable influence upon French literature, opening paths which previously had not been trod.

The most important of her works is De l'Allemagne, in writing which her only desire was to make Germany known to the French, to explain it by comparison with France and to make her people admire it, and to open new paths to poetry. According to her, Germany possessed no classic prose, because the Germans attributed less importance to style than did the French. German poetry, however, had a distinct charm, being all sentiment and poetry of the soul, touching and penetrating; whereas French poetry was all esprit, eloquence, reason, raillery.

In her treatise on the drama, she was the first in French literature to use the term "romantic" and to define it; but she had not invented the word, Wieland having used it to designate the country in which the ancient Roman literature flourished. Her definition was: "The classic word is sometimes taken as a synonym of perfection. I use it in another acceptance by considering classic poetry that of the ancients and romantic poetry that which holds in some way to the chivalresque traditions. The literature of the ancients is a transplanted literature with us; but romantic or chivalresque literature is indigenous. An imitation of works coming from a political, social, and religious midst different from ours means a literature which is no longer in relation with us, which has never been popular, and which will become less so every day. On the contrary, the romantic literature is the only one which is susceptible of being perfected, because it bears its roots from our soil and is, consequently, the only one which can be revived and increased. It expresses our religion and recalls our history." This opinion alone was enough to create a revolt among her contemporaries. Almost all other interpretations of Faust were based on her conception.

At the time of its publication, her book was considered to have been written in a political spirit, but her motive was far from that; it was the action of a generous heart, a book as true and loyal to the French as was ever a book written by a Frenchman. In her work Considérations sur la Révolution Française she expressed the most advanced ideas on politics and government. The Revolution freed France and made it prosper; "every absolute monarch enslaves his country, and freedom reigns not in politics nor in the arts and sciences. Local and provincial liberties have formed nations, but royalty has deformed the nation by turning it to profit." Mme. de Staël found nothing to admire in Louis XIV., and to Richelieu she attributed the destruction of the originality of the French character, of its loyalty, candor, and independence. In that work she advocated education, which she considered a duty of the government to the people. "Schools must be established for the education of the poor, universities for the study of all languages, literatures, and sciences;" these ideas took root after her death.

Mme. de Staël was a finished writer; because of its force, openness, and seriousness, her style might be termed a masculine one; she wrote to persuade and, as a rule, succeeded. Her grave defect seemed to be in her inspirations, which were always superior to her ideas, and in her sentiments, which she invariably turned to passions.

Few French writers have exercised such a great influence in so many directions, and it became specially marked after her death; while living, the gossip against her salon prevented her opinions from being accepted or taking root. Her political influence was great at her time and lasted some twenty years. Directly influenced by her were Narbonne, De Montmorency, Benjamin Constant, and the Duc Victor de Broglie, her son-in-law. By her and her father, the Globe, the orators of the Academy and the tribune, and the politicians of the day, were inspired. The greatest was Guizot, who interpreted and preached in the spirit of Mme. de Staël. In history her influence was equally felt, especially in Guizot's Essays on the History of France, and in his History of Civilization, wherein civilization was considered as the constant progress in justice, in society, and in the state. To her Guizot owed his idea of Amour dans le Mariage. The Historical Essays on England, by Rémusat, an ardent admirer of hers, was largely influenced by her Considérations, while Tocqueville's Ancien Régime contains many of her ideas.

Literature owes even more to her works, which encouraged the study of foreign literatures; almost all translations were due to her works. Michelet, Quinet, Nodier, Victor Hugo, so much influenced by German literature, owe their knowledge of it mainly to her. Too much credit may be given her when it is stated that all Mignons, Marguerites, Mephistopheles, etc., proceeded indirectly from her work, as well as nearly all descriptions of travels. Lamartine undoubtedly used her De l'Allemagne and her Des Passions freely. The heroine of Jocelyn is called but a daughter of Delphine, and the same author's terrible invective against Napoleon was inspired by her.