The relationship between Sophia Dorothea and her daughter-in-law queen Elisabeth Christine was not good during the first years of her son's reign, as she resented her daughter-in-law's precedence in rank, though her son assured it to be merely formal, but their relationship improved during the last years of her life. Sophia Dorothea saw her son for the last time after his first campaign in January 1757 during the Seven Years' War. At that point she was well, but soon after his departure, her health rapidly declined, and she died on 28 June 1757.