I think this is a two layer story. At first, the woman wants to leave the relationship ("sad eyes looking to the door") and sees that it will not last. But he tries to give her comfort and almost defiantly tells her that she can come and go as she pleases ("train every day leaving either way"), he's not holding her there, in fact taunts her ("you'll soon be gone, it's just as well").
Later, she has won his heart. They have a child together. He now wants to protect her, to lock her and the child safely from the world. However, now she has already gone ("a child's drawings left there on the table and a woman's silk lying on the floor"). Suddenly he recalls his kind (but taunting) words, that she can come and go as she pleases, even though now, his false taunting and bravado are see as just a way of protecting himself. He does not want her to go. Yet "there's a train every day, leaving either way" echos in his mind, and his now broken heart.
I think this is a two layer story. At first, the woman wants to leave the relationship ("sad eyes looking to the door") and sees that it will not last. But he tries to give her comfort and almost defiantly tells her that she can come and go as she pleases ("train every day leaving either way"), he's not holding her there, in fact taunts her ("you'll soon be gone, it's just as well").
Later, she has won his heart. They have a child together. He now wants to protect her, to lock her and the child safely from the world. However, now she has already gone ("a child's drawings left there on the table and a woman's silk lying on the floor"). Suddenly he recalls his kind (but taunting) words, that she can come and go as she pleases, even though now, his false taunting and bravado are see as just a way of protecting himself. He does not want her to go. Yet "there's a train every day, leaving either way" echos in his mind, and his now broken heart.