Final answer:
The governess's statement about pretexts being useless now signifies a turning point where she and Flora acknowledge the futility of continued deception in their relationship.
Step-by-step explanation:
When the governess says, "What she [Flora] and I had virtually said to each other was that pretexts were useless now," she is articulating a moment of unspoken understanding that both she and Flora acknowledge the pointlessness of making excuses or maintaining pretenses in their situation. This typically suggests a shift in their relationship dynamic, where both parties are dropping their guards and facing the reality of their circumstances without the veils of deception or false rationalization.
In the context of a story, such a declaration often marks a critical moment of truth between characters, indicating that the parties involved are on the cusp of confronting some pressing truth or issue. Whether this leads to a resolution or further conflict depends on the subsequent actions of the characters, but it is clear that any semblance of pretense they had maintained up to that point has been discarded.