The Wicked Ladies in Waiting

Yulia, who was born an orphan, was killed in exchange for falling in love with the Young Master of the Marjoram Family. But when she opened her eyes, at the same location as any other day, she was rescued by the Commander of the Imperial Army, Carus... She was hit by a curse of being unable to die, and this is now her eighth life. After realizing that she would be stuck in the loop forever if she didn't take down the Marquis, she became a servant within the Palace to utilize the Royal Familys power to demolish the Marjoram Family in her eighth life. Isnt this how were supposed to plot revenge?