After the accession to the throne of her spouse in 1751, she gathered a group consisting of supporters of absolute monarchy called Hovpartiet, consisting of Carl Gustaf Löwenhielm, Adam Horn, Nils Adam Bielke, Erik Brahe, Magnus Stålsvärd, Eric Wrangel, and Gustaf Jacob Horn.

This resulted in a prosecution of the followers of Louisa Ulrika within the Hovpartiet, one of whom, Eric Wrangel, fled to Norway to avoid arrest.

In Uppsala, they would summon the regiments of Närke, Värmland and potentially Uppland as well as the Life Guards with the aid of the colonels Stierneld and Kalling.

[1][page needed] She also borrowed 6000 ducats from Charles I, Duke of Brunswick-Wolfenbüttel through count Johan August Meijerfeldt the Younger.

A lady-in-waiting of the queen, Ulrika Strömfelt, who was a loyal follower of the Hats and not a supporter of absolute monarchy, reportedly informed the Riksdag that some of the crown jewels were missing.

The queen replied that she refused to allow them to see the crown jewels, which had been presented to her in Berlin upon her marriage, as she regarded them as her private property.

[1][page needed] To prevent this, she and her followers within the Hovpartiet, Hård, Horn and Brahe, planned to stage the coup before that day, despite the protests of king Adolf Frederick.

[1][page needed] A new Riksdag would then be summoned to Västerås or Norrköping, which would be made to approve a new constitution, reintroducing absolute monarchy.

[1][page needed] At the same time, one of the royalist officers, Christiernin, had asked a corporal Schedvin if he was "prepared" to be "faithful to his King".

Count Meijerfeldt advised her to leave for Uppsala immediately, use their initial plan of the previous year, and march for Stockholm.

When the king and queen returned to the capital the same night, the streets were patrolled by a militia of nobles, and cannons were aimed at the Royal Palace.

[1][page needed] On 4 August 1756, a delegation from the Riksdag, led by the archbishop and Bishop Samuel Troilius, presented Louisa Ulrika with a note, to which she was made to reply with a letter of regret.

The declaration stated that "she had forgotten her duty to God, her consort, and the Kingdom of Sweden, and that she was responsible for the blood of the recently executed".

[1][page needed] In private, Louisa Ulrika regarded the reprimand as a humiliating insult, and wrote to her brother Frederick the Great that during the interview she attempted to display "all the coldness, all the contempt possible to make in a demonstration [...] In my hardest moments I remind myself that I am the sister of Frederick the Great",[1][page needed] and that she regretted nothing but that her revolution had failed.

[1][page needed] Ulrika Strömfelt lost her position at court, but was rewarded by the state with the honorary title Ständernas dotter (English:"Daughter of the Parliament") and a pension of $2000.