karabooo, with your
12 I promised you 'something extra'. I figure the most useful thing right now is a direction to go in to find the source? But, if you prefer, it could instead be an insight into the nature of the source and then you would need to find it on your own, or something else completely.
If you want, go ahead and narrate (in character) how
Ezme comes to this realisation/discovery, and tell us what you find that points you in the right direction, and what direction that is (probably using the river and towards or away from the ocean as landmarks?), or what you learn about the nature of the threat.
If you would rather get something else, we can talk about it.
If you would rather I do this narration, I am happy to do so.