Hand left behind in the air when he turns his head to read from her phone, Benjiro gives a couple of strong nods. She’s right about the size.

He sees her typing again, and waits to read the question that follows. He furrows his brow in thought, then holds up a finger in request of a moment to try. Reaching into his bag, he pulls out a pair of notebooks. He opens the first to the tracking marks, and the second he skims to pull out a printed copy of a map of the local coast from between the pages. Starting on the map, he marks roughly where they began the descent while resting the other notebook on his duffle bag for reference. Slowly he marks ticks along the map, some longer and some shorter with varying degrees of turns based on his memory and notes. The final straight line slides to a stop right near the mouth of the river. There, he marks an X and turns the paper to Mary Ann.

This is very near where Sadie was in the river when she set off something with her magic.