When Charles is in London, feeling trapped by his future, he picks up a prostitute on the street because she looks vaguely like Sarah. This woman has a young daughter and goes about her work in a professional, almost dispassionate manner. When Charles finds out that her name is also Sarah, he vomits. Symbolically, the prostitute stands in for Sarah in terms of Charles’s lust—she’s a form of Sarah that Charles can possess in a way he never can possess the real Sarah—but she also demonstrates what Sarah’s life could easily be like, as Sarah herself says she’s likely to become a prostitute if she goes to London. Furthermore, both Sarahs end up having daughters whom Charles plays with.