Ballistic was the one supposed to kill Cherish, the others had different targets. It was when they didn’t attack the others while waiting on ballistic to kill her, and instead pushing him to do it, that she instead warned the nine after having been waiting a safe distance away.
Ahh, I suppose it makes sense that she might not have time to mess with the others’ emotions after she realized messing with Ballistic’s wasn’t enough. She didn’t think they all were after her, so she may have figured Ballistic’s murderous intent was in spite of the plan.