[Rider had still had her eyes closed, but opens them at that, which means catching sight of the flattened brush she might have missed otherwise. Good timing there. But that goes straight into the back of her mind to be dealt with in the very near future; Sakura's name coming up is all she can focus on as soon as it happens. Her eyes widen a little in surprise. Of course Sakura had been alive during the fourth war, and so it isn't unthinkable that Grainne knew her or of her, but the possibility hadn't occurred to Medusa at all.

The rest is also very interesting, but takes a temporary backseat to Sakura.]

—You know of Sakura? Yes. She is my Master. . . . Even now, in a life after the war, I remain at her side.

[And she's worried about not being there now. Even knowing there are time shenanigans here, even knowing everything's all right, the anxiety isn't entirely escapable.]