Her mother, who had a major influence over the king, went along with him. Of these three, she was reportedly the closest with Maria Amalia. Sophia would never return. Sophia spent the next three years here, walking among the gardens with her sisters and continuing her education, but staying away from the Imperial Court, and Chateau de Argenteuil.Finally, in early 1744, Grandelumiere started to push back Prussia over the Saxon border, and into Poland.As the Prussians were pushed back into Poland, it looked as though the war was in favor of the Saxons. After Sophie enlisted the help of the Comte d'Ayen, who wished to dispose the influence of the Cardinal by exiling him from court, Ayen gave Sophie his support. Among her daughters, who detested their father's mistresses, she would privately endorse their campaign against Louis-Auguste's longterm lover and Sophie's prime humiliator, Louis-Paul Jules de Rochechoaurt de Mortemart de Belle-Ile, Marquis de Belle-Ile. This powerful alliance was believed to be able to give Grandelumiere leverage and power over their prime rivals, the Austrian Hapsburgs.In late 1744, the Grandelumierian Court requested her hand, and negotiations for her marriage began.

The Pavillon was considered a celebration of the pair's friendship, and had paintings and busts of both in numerous places. Sophie considered the Demoiselle de Nozières the most hurtful as she was the first, but disliked the Marquis de Belle-Ile the most on a personal level, as it was during this time where he and the Dauphin often played small pranks on her and took fun in humiliating her. Prussia's forces soon made it to Dresden, where the Saxon royal children were located. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Consequently, her family soon left back to their native countries of Saxony and Poland. With this alliance obvious, her power was increased, having a close relationship with the Petit-Dauphin.

However, Sophie, already so isolated at the Grandelumierian court, forcefully refused. Being short in stature, she was considered plain, having an average figure with unnoticeable curves, which soon faded with her numerous pregnancies. Raised in a warm, happy family, her father was entirely faithful to her mother, and consequently, Sophie did not realize a man capability to enjoy another woman's company besides his own wife's.The Duc's own impression of his wife was quite negative as well. Although the rivalry with the Cardinal ended with his death in 1758 at his private residence, Chateau de Reuil, she privately despised the man and a few remnants of his family for the rest of her life.

In the contract, she was thus guaranteed fifty thousand crowns for rings and jewelry, two hundred and fifty thousand crowns upon her wedding, and the further guarantee of an annual widow allowance of twenty thousand crowns. Subsequently, Prussia sacked Dresden Castle, forcing the royal court under house arrest. Often thinking she was being haunted by ghosts, the Gräfin constantly comforted her and demanded on sleeping by Sophie's side, even during the nights Sophie's husband came to her bed. Furthermore with the double marriages of Sophia's eldest brother to his Bavarian bride (Maria Antonia), and her eldest sister (Maria Amalia) to the Bavarian Elector, Grandelumiere would not only acquire strong ties with Saxony-Poland, but also with Bavaria. Educated in the castle of her birth, Dresden Castle, her mother personally oversaw the girls' education. This unfortunately hindered her ability to be present at court functions and caused her to retire to confinement about two weeks early. Thus, the Saxon-Polish court was far from the ostentatious courts of the rest of Europe, which were so popular at the time. This hardly gave enough money to cover the soon massive gambling debts she would rack up, along with the added expense of the large list of charities and organizations she had pledged to. Said to be one of the most fashionable women of the time, she was known to influence court fashions immensely. As she was among the possible candidates concerning a regency for the young boy, with this fact rather well-known at court, she did command some political influence. Consequently, after it ended in miscarriage, she was laid up in bed for countless months, although she miraculously survived the illness.Sophie's final pregnancy occurred in 1760, to the surprise of the court.