It seems that a majority of these cases were actually consensual, not assault: >Among the substantiated staff-on-inmate cases in 2011, 54 percent were committed by women, the report said. From 2009 to 2011, 84 percent of the substantiated staff-on-inmate cases involved a sexual relationship with a female staff member that “appeared to be willing,” compared to 37 percent of the cases involving male staff members durin…
Let's see the numbers for those released that continue the relationship, call THAT consensual instead. What the article speaks of is sexual assault.