User blog comment:Thailog/Ep. 203 "Alienated" discussion/@comment-76.107.184.213-20120512150602/@comment-69.123.242.36-20120512160721

Tula probably was sent on a mission to stop Ocean Master in Atlantis with Aqualad, Lagoon Boy, and Garth but she sacrificed herself to stop Ocean Master and the Team didn't try to stop her. So Aqualad feels angry and guilty.