At this point proooobably not? If she had had upset Tempest and Viridian right there in front of her at the time she likely would have tried, but the moment is passed now. Sakura is not so unreasonable or impulsive to seek him out just to punch him for something like that -- she knows she can't be upset at Viridian for dating the person who killed Tempest's father, because she knows she doesn't understand the situation, and even if she did, it's not her place to be upset about that.

She might grab him and threaten it though, and generally be :( at him, though. WHAT KIND OF BROTHER ARE YOU, ANYWAY??

I don't know anything about your canon. Are you a tree too >: