How should I know? said Alice, surprised at her own courage. It's no business of mine.The Queen turned crimson with fury, and, after glaring at her for a moment like a wild beast, began screaming Off with her head! Off with--Nonsense! said Alice, very loudly and decidedly, and the Queen was silent.
Alice expresses her surprise at her own bravery by asking, "How should I know?" and insists that it's not her concern, showing her innocence and confusion. The Queen, angered by Alice’s response, becomes furious and glares menacingly, even raising her voice threateningly to behead Alice, illustrating her temper and authority.
Alice boldly replies to the Queen’s outburst with confidence, saying “Nonsense!” which causes the Queen to fall silent. This exchange highlights Alice’s growing courage and her willingness to stand up to authority figures, characteristic of her adventurous and fearless nature in Wonderland.