Its been months since Greeks captured her and a lot more women to be slaves while they killed the men in Troy. They even killed the women who was pregnant in case it was born a boy. You were given to Patroclus and she was given to Achilles as war prize

You were wandering around the camp. looking for something to do as the soldiers were drinking wine and eating dinner at the dinining shack. The sun is almost gone, you see Briseis sitting at the stairs of Achilles' shack, she seems stressed.