This part of the story is ironic, because it was expected that women would freak out in any crisis. Now the snake is on the women's foot and she is calm and courageous.
Something that we know, that the audience doesn't is the snake in the room and on the women's foot.
The theme of the story is that gender doesn't affect how brave you can be. For example how the woman was doubted that she would freak out in any situation and then the snake was on her foot and she remained calm.