LUFKIN, Texas -- The would-be teen mother arrived by ambulance last May, her belly bruised, the twin fetuses she carried for five months gone and her lips tightly sealed. Authorities assumed 16-year-old Erica Basoria had been beaten and charged her boyfriend, 18-year-old Gerardo "Jerry" Flores, with murder under the state's new law protecting the unborn. But it wasn't that simple. Basoria told authorities she had been trying to kill the fetuses for weeks and finally asked Flores to help by stepping on her stomach. "When I was four months pregnant, I began to show, and at that time I decided...