Final answer:
The statement that Bess and the highwayman are being spied on when they meet at the inn-yard window is True. The provided texts indicate that characters in the narrative are often observed secretly, which is in line with the theme of the story where espionage is commonplace.
Step-by-step explanation:
True or False: Bess and the highwayman are being spied on when they meet at the inn-yard window. The answer to this question is True.
In the excerpts given, we learn that characters in the story are subjected to secretive observation. There is an instance where Lassiter advises Jane that they should speak quietly because they are being spied on by her women, suggesting the prevalence of espionage within their environment: 'I reckon it'd be a good idea for us to talk low. You're spied on here by your women.' While this excerpt does not directly mention Bess and the highwayman, it sets the tone for secrecy and indicates that characters are frequently watched without their knowledge.
More directly related to Bess, another part of provided text reflects on a man's sharp eyes noticing someone attempting to hide—which could be a hint toward Bess and the highwayman's situation: 'I rode in from the sage. Watched? By whom? By a man who thought he was well hid.' This suggests that the theme of being watched or spied upon is integral to the storyline and that it would not be uncommon for Bess and the highwayman to be spied on as well.
The narrative encapsulated by these snippets is rich with secrecy and the concept of characters being observed without their awareness, supporting the True response to the question regarding whether Bess and the highwayman are under surveillance at the inn-yard window.