Nope, just a cruel reminder, it is implied that Morganna, force fed that memory shard into Tsukasa, at that time to make it seem a little more reasonable. Tsukasa, would blindly follow his dead mother, Morganna's mistake was just like that of his dad's. She didn't pay enough attention to Tsukasa which drove her from Morganna's sight, she began to have doubts, and Morganna's only "motherly advice" is to stay away from the search of the Key of the Twilight. Told in the story of the Little Mermaid.
Another large downfall of Morganna, is her oh so whimsy temper, which is another large reason Tsukasa turns away from her. One thing screws up in her plan and she goes to the extreme. "Tsukasa, it seems you were leaving here, so I tied her down instead. (referring to Aura, wrapped in thorns) So she can't go anywhere." Because of her utter anxiousness and her impatient self, she drove Tsukasa away, and ultimately drove him to find the Key of the Twilight.
This is also the first appearance of Morganna's "Data Bugs". I would like to type more regarding the relationship of Tsukasa and Morganna, but I've had a mind lapse, I'll post again later, if I remember anymore.