These students are quite bored, aren't they? They need more to do in their life. Still trying to understand that chain and lock on the box in the prior chapter. Could pick that lock style with a tooth pick and nothing was holding that chain to the box, so it'd just slip off. Should have made a magic lock or something instead.
Gonna guess the church's agent guy gets concerned when the target doesn't show up, so he hunts her down and saves her. A fun twist would be he saves the prince from her out of control magic.