This article lists a bunch of cases and some of the sentences. This sentence looks on par with what men typically get. There is a range of sentencing between suspended jail time with probation to one or two years jail time. More if there is threat of violence like a knife or something but most of this shit is consensual or quid pro quo. https://www.prisonlegalnews.org/news/2016/aug/22/ultimate-humiliation-guards-sexually-assault-prisoners-throughout-us/