I need a quote and chapter number show Mercedes' and Haydee's personality.

Mercedes: "You did have faith," she tells Edmond, "you had strength, you trusted in God, and God sustained you. I was a coward, I denied Him, so God abandoned me; and here I am!" (Chapter 105)

Mercedes is her own harshest critic. She is able to finally see and acknowledge her own frailties and Edmond's strength.

Haydee- "though I am a Christian, I have always thought to avenge my illustrious father." (Chapter 120)

Although Haydee is pretty much a slave herself, she does have conviction.