Mm... the river through our hometown was flooding, and the dike broke. She just walked through the water, clapped her hands, and created a new one from the ground. Didn't even live there, she was just passing through and stopped to help. Aah... it was really cool. We didn't even really think about it, we just ran out and begged her to take us as students.
*there's just the tiniest hint of sad confusion at the very end*