"It seemed like he could never figure out which Trudie he loved the best, the docile church basement lady in the moon boots or the rebellious chick with the sexy lingerie." This suggests the main character struggles to understand his feelings for Trudie, who presents two very different sides of herself. The author implies that these are just facades, and the real Trudie probably exists somewhere in the middle, blending these extremes.
"But that's the thing about this town - there's no room for in between. You're in or you're out. You're good or you're bad. Actually, very good or very bad. Or very good at being very bad without being detected." This highlights the oppressive social environment of their town, where only extreme positions are accepted, and ambiguity is not tolerated. It underscores the judgmental, rigid nature of their community, where people are forced into binary roles.