PHOENIX – The daughter of a county supervisor has been arrested on suspicion of sexual misconduct with the same teenage boy that her mother is accused of sexually abusing over a three-year period, police said Thursday. Rachel Katherine Brock, 21, was arrested Wednesday on three counts of sexual conduct with a minor and one count of transmitting obscene material as part of an ongoing investigation surrounding her mother, 48-year-old Susan Brock. Both women were being held without bond at the Maricopa County jail. < SNIP >