In another pre GRA era we might have seen a different story. Young vulnerable (and add in your vulnerabilities here as there will be some by the nature of being imprisoned in a facility for "complex" prisoners) woman found having sex with a drunken older man.
The response, for many at least, would have been around what was that man doing there.
As well as risk assessing the trans prisoner should they not have risk assessed each and every women. Pound to a penny at least some of them will have low self esteem and be very vulnerable to coercion or bullying from men or people they, on a physical or emotional level, perceive as men.
But the women, especially very vulnerable women, are not centred. Even though society has chosen to put them in this prison and is setting the environment in which they live.
Good though to know that there are transgender wings elsewhere.