Final answer:
The landlady's behavior is odd because she is brewing the tea herself instead of offering a pre-made option. The tea itself, known as Billy tea, is also unconventional.
Step-by-step explanation:
Based on the given information, there are a couple of odd things about the landlady's behavior and the tea. For the landlady's behavior, it is odd that she is brewing the tea herself instead of offering a pre-made or store-bought option. This suggests that she may have ulterior motives or a specific way of making the tea. As for the tea, the term 'Billy tea' itself is odd. Billy tea is a type of tea that is traditionally made by boiling water in a metal container called a billy can, often over a campfire. The fact that the landlady is brewing this type of tea suggests that she may have a rustic or unconventional approach to hospitality.
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