She realized that the Plague Doctor was putting them under experiments and not necessarily teaching them. She was the real reason why she, her sister, and their mother were all sick. When she tried to confront The Plague Doctor she fell victim to the powers of what she learned to be The Reborn One.
She was believed to be dead and her body was to be used as part of the Reborn One's vessel. However, she was able to regain consciousness with the help of another. With the large magic output it had caught the attention of Copper. The two escaped and Dria went on to form the Guild of the Lost. Copper agreed to work alongside her as it appeared that the two of them had mutual goals. Put a stop to the magical overthrow that was underway.
With the Guild at play, they sought out to prevent The Reborn One from succeeding in their goals. Which also meant, interfering with her father's plans and goals. In doing so she made the discovering of Draconic kind being present within the realm. Any of those with draconic blood that she can locate have been placed under the Guild's protection.
During a raid attempting to rescue refugees from the Kawit invasion, Dria came face to face with Unknown the leader of Unknown that was just established. She agreed to use the resources of the guild to help aid him in his ventures.