Lupe's Revenge

S6, E3: Peggy takes the school Spanish club on a field trip to Mexico. She mistakes a little Mexican girl, Lupe, for one of her students, and takes her back on the bus with her. When she realizes her mistake, she brings Lupe back to Mexico and is arrested for kidnapping. Meanwhile, Hank finds himself the object of a female cop's affections, who keeps pulling him over for various reasons, in order to spend time with him.