Quote 28
Her bitterness was understandable, the wickedness that led her to take away other women's children because she had lost her own, understandable too but not forgivable. (12.13)
Arthur gets it. He's a sensitive, modern man, and he can understand why Jennet is sad and bitter. But that doesn't mean he approves. (Especially when it's his child, we guess.)
Quote 29
Doubtless, in such a place as this, with its eerie marshes, sudden fogs, moaning winds… any poor old woman might be looked at askance; once upon a time, after all, she would have been branded as a witch… (4.19)
At first, Arthur thinks that people were afraid of Mrs. Drablow because she was an old woman. Silly yokels, right? Surprise! She's not the one they're afraid of.
Quote 30
Mr. Jerome looked frozen, pale, his throat moving as if he were unable to utter. (4.54)
Mr. Jerome is truly afraid, but he's not going to give any clues as to why. Why is everyone so vague? Why don't they want to warn Arthur away?