Of all things she might have expected to reunite herself and her siblings, a miffed suitor of Sandry wasn't it.
But oh, they are united in their fury.
Daja wants to go and find him, and pummel him with her staff. It's not for show; one of her main hobbies is training with it. But she's by far the most cool-headed, because, conversely, learning the art of fighting makes her less likely to do so.
Fortunately, after only a little arguing, her siblings agree. So maybe Tris is finding it difficult to contain her migraine, at the thought of Sandry being trapped, and Briar wants to go find his knives, but they soon remember revenge is a dish best served cold. They go and find the Empress.
Together.
One good thing, Daja thinks, ironically, came out of that very foolish man's attempt to separate Sandry from her siblings: the exact opposite outcome of what he'd intended.