To judge from the lesson, summoning the required tools of the trade is inevitable regardless of intent. Perhaps they meant that only as concerns a focus, which you had no need to summon.

[She's faintly envious and more than a little irritated, though by the same token not surprised that Brighid's weapons hadn't come here with her. They are, after all, a special case -- the more so since no one else here appears to be a Driver.]