I am loathe to suggest it because there are more of us than them. If they all turn up in one place, one of us will have to turn and run for the hills or be trapped in a three-on-one duel, which I don't see either of us winning.
Maybe we could preemptively stop their plan from succeeding? Steal the Box from Astrune? It IS what they're after. The legality of that is questionable but Vera's not one for coloring inside the lines, so to speak, and it'd be for a good purpose.