Okay...I'm trying to think how much time will have passed since the beach landing. Seems like a lot will have happened by the time I post. So, the boats landed at midday. I'm thinking these coastal watchtowers were poorly manned since the Prophet probably didn't expect an attack by sea. So, the Forlorn Hope and the penal battalions could probably have done all their work by nightfall. Maybe the penal battalions had further orders to press on into the forest, under cover of darkness, to begin work on the ram. Once it was about done they would go get Myra from the watchtowers where she's waiting for orders. The assault would begin at dawn.

My post would start with Myra waiting in the watchtower and Sweet Thond coming to get her.