I love that his mother knows that when Balint had been younger he used to ford the river to meet Dinora and that’s why Balint had been thinking of Dinora in his walk. We learn from him he had used this ford on the ‘darkest of moonless nights’ but not all the detail, we only learn what he thinks. I like this was kept a secret from us and we learn it from the person whom it was supposed to be kept most secret.