After witnessing the events leading to the destruction of the Black Star, Tyris decided that her meeting with the anomaly was long overdue. She had pondered whether or not to wait for him outside Kaduria, but she decided against it.
Explaining how she had gotten there and how much she had witnessed would require a long-winded explanation about her role as a Guardian in order to avoid a useless struggle. She knew enough about Lith to predict that he would attempt to silence her forever if he thought she had discovered his nature as Awakened.
Guardians didn't hide their existence. Everyone in the Gorgon Empire knew about the massive dragon sleeping in the throne room and Salaark was an even worse example of discretion.
