What is Mme Defarge’s reaction when she sees Sydney? How does he speak to her? (From Book 3 Chapters 11-15)

She does not seem to care much for him. He speaks to her in a bad French accent. She knows that he is English.

As Carton walked in, took his seat and asked (in very indifferent French) for a small measure of wine, Madame Defarge cast a careless glance at him, and then a keener, and then a keener, and then advanced to him herself, and asked him what it was he had ordered.
He repeated what he had already said.
"English?" asked Madame Defarge, inquisitively raising her dark eyebrows.
After looking at her, as if the sound of even a single French word were slow to express itself to him, he answered, in his former strong foreign accent. "Yes, madame, yes. I am English!"