How we cite our quotes: (Chapter.Paragraph)
Quote #7
We never learned whether Mrs. Lisbon caught Lux as she tried to sneak back inside, but for whatever reason, when Trip tried to make another date to come sit on the couch, Lux told him she was grounded, and that her mother had forbidden any future visits. (3.59)
Mrs. Lisbon obviously doesn't catch Lux in the act of sexing Trip, but she has that maternal sense that someone's up to something and puts the kibosh on it immediately. Maybe she just feels the sexual tension between the two, but she sees sex as sinful and clamps down.
Quote #8
In Dr. Hornicker's opinion, Lux's promiscuity was a commonplace reaction to emotional need. "Adolescents tend to seek love where they can find it," he wrote in one of the many articles he hoped to publish. "Lux confused the sexual act with love. For her, sex became a substitute for the comfort she needed as a result of her sister's suicide." (3.60)
Dr. Hornicker believes that Lux's depression after her sister's death, the trauma of Cecilia's suicide and her mother's withholding of love causes her to look for love in sex. Her mother disagrees strongly with this analysis and insists there was plenty of love in their home. Again, it's a simplistic explanation. Bereaved siblings don't usually become sex maniacs.
Quote #9
A sense of playacting permeated much of her behavior. Willie Tate admitted that, despite her eagerness, "she didn't seem to like it much," and many boys described similar inattention. […] Other times she treated it like some small chore, positioning the boys, undoing zippers and buckles with the weariness of a checkout girl. (4.14)
Lux's promiscuous sexual behavior has a compulsive quality to do it. She can't stop luring boys to her rooftop but doesn't seem to be really enjoying it. It becomes routine and almost boring, but she can't stop.