In 1807, during the War of the Fourth Coalition, Frederica intervened politically. Her sister, the Russian Empress, sent her a letter through their mother, that she should use her influence to advise the king to make peace with France, and that anything else would be a mistake. She did make an attempt to accomplish this, but the king viewed it as an attempt to influence him in favor of Napoleon, and her interference in the matter caused a conflict between the king and queen. In one political issue, Frederica took an interest during her marriage an successfully enforced, though her reason was not political. Already during the first years of heir marriage, the king often spoke of his wish to abdicate in favor of a simple family as a private person life abroad. To this, Frederica always objected and did not hesitate to enforce her opinion even when it led to arguments, but her foremost reason to this was reportedly that if her spouse abdicated, it would result in them having to leave their son, who would be succeed his father, behind them.