I was thinking about the frequently quoted high suicide rate as a reason why transwomen need to be in women's spaces and I wondered what suicide rates were like for women in prison. I had a look and found this article in the Independent from a couple of years ago:
www.independent.co.uk/news/uk/home-news/female-prisoners-suicide-death-rate-mental-health-nearly-half-attempt-figures-reveal-prison-reform-a7724171.html
Seems like they're pretty bloody high. Surely then the risk of these vulnerable women in prison committing suicide is a reason why they need their spaces to remain single sex and not have to deal with the added stress of having male bodies to deal with on top of everything else they have to face.