Quote 10
"Yes, indeedy," said Jean Louise wryly. "I especially liked the part where the Negroes, bless their hearts, couldn't help being inferior to the white race because their skulls are thicker and their brain-pans shallower—whatever that means—so we must all be very kind to them and not let them do anything to hurt themselves and keep them in their places." (8.26)
This is Jean Louise's sarcasm here; she is repulsed by these beliefs. Although she doesn't use the term eugenics, which is the hateful philosophy Atticus is studying.
Quote 11
"Cousin Edgar still courtin' you, Aunty?" asked Jean Louise. "Looks like after eleven years he'd ask you to marry him." (2.24)
If Jean Louise knows anything, it's how to tease people. And Aunt Alexandra is basically perfect (at least, she thinks and acts as though she's perfect), so Jean Louise picks up on one flaw: her marriage.
Quote 12
"She wants a father instead of a husband, then." (4.25)
This is a complicated statement about marriage. Jean Louise definitely wants a man like her father to marry. However, she realizes she greatly misunderstands her father. Henry actually is very similar to Atticus, but once Jean Louise realizes she doesn't like Atticus all that much, she definitely doesn't want to marry Henry.