Estella treats Pip very scornfully when they first meet. They first encounter one another when she lets him into Satis Hall, where he has come to meet Miss Havisham. From the start, Estella seems haughty and proud. She makes no effort to smile or be pleasant, and she calls Pip "boy" over and over, although they seem to be the same age. As Pip recounts:
She seemed much older than I, of course, being a girl, and beautiful and self-possessed; and she was as scornful of me as if she had been one-and-twenty, and a queen.
Estella has been raised to be cold by Miss Havisham. This is Miss Havisham's way of getting back at all men because of the hurt she suffered when her betrothed left her at the altar. Pip, of course, doesn't understand this and assumes when he comes into his great expectations that Miss Havisham is behind his new status. He believes she wants to raise him up to be a gentleman so that he can marry Estella, but that could not be further from the truth.