CEDAR RAPIDS — A Dubuque woman was sentenced to 30 years in federal prison last week for sexual exploitation of two children. Gina C. Urbain, 37, previously pleaded guilty in U.S. District Court to one count each of sexual exploitation of children and possession of child pornography.During the plea hearing, Urbain admitted she sexually exploited two minors, a 7-year-old girl and 5-year-old boy, by creating visual depictions of sexually explicit material involving both children.She also admitted to possessing visual images of child pornography.The older child told her therapist about Urbain’s sexual abuse and her fear that Urbain took photos of the acts, according to a search warrant affidavit filed in Dubuque County District Court.