No, the Nova one was an accident, and she reacted as Nova should do.

an Dalai was specifically asked Orion, to do it. . .
( Edit : Replayed that part , not Really Dalia asked, indeed Orion suggested it first , but He quickly backed down, Dalia than decided she wanted it and actually convinced Orion to do it )
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And as the events unfold Orion realized the girls could have end up in serious danger and he is not gonna risk that in the future, Even though and here's the kicker, that these girls would willing to Risk their life if it would come to do it . But Orion is not willing to take the risk, that is character progression.
There was a Batman animated movie, I think Year one, in one of the story Lucius Fox, developed some kind of Shield that stops, deflected bullets, but at one time it deflected the bulet back to the enemy and Bruce decided he wont use it anymore because it's "wroks to good " , but could harm others, and While He himself was willing to take the risk for the succes , but only his own life , not others .
But he needed to experience this to come to this decision, same way as Orion had to experience the fear and worry he felt, when he thought Dalai was in danger and could end up hurt badly, or dead.
No budy , that was an excellent way to go about it