Where does Anna live after leaving her family's home and moving to the marsh in the novel, The Way Home?

When Anne moves to the marsh, she lives in a makeshift hut at the base of an oak tree, comforted by a "stick of days" on which she keeps a record of the passage of time. Her companions are two chicks, Rose and Piper, which she hatches from fertile eggs taken from a stable en route to the marsh.