Quote 1
"But we won't LET you walk—it wouldn't be Southern hospitality to do it. Come right in." (33.37)
Some rules of Aunt Sally's Southern hospitality are nice, like being friendly to your guests. Others, like owning slaves, are… well, not so nice.
Quote 2
She grabbed me and hugged me tight; and then gripped me by both hands and shook and shook; and the tears come in her eyes, and run down over; and she couldn't seem to hug and shake enough, and kept saying, "You don't look as much like your mother as I reckoned you would; but law sakes, I don't care for that, I'm so glad to see you! Dear, dear, it does seem like I could eat you up! Children, it's your cousin Tom!—tell him howdy." (32.10)
Aunt Sally is so excited to see a relative that she completely ignores the fact that Huck looks nothing like her family. This is one of the good things about the South—but we can't help remembering that the same people hardly think twice about separating a black family.
Quote 3
"It's YOU, at last!—AIN'T it?"
I out with a "Yes'm" before I thought. (10.8, 10.9)
Here's Tom Sawyer's aunt Sally asking Huck, "Is that you?" By now, Huck is so used to lying that he says "Yes" before he even knows who "you" is supposed to be. In other words, Huck will be whoever you want him to be. Just like your imaginary boyfriend.