It's lucky that it's a short sentence really. Difficult to belive that segregation is ever 100% effective or achieveable, but it might be managed for just four weeks. One pragmatic suggestion would be that HMPS establishes a dedicated unit attached to a women's nick to handle transitioning prisoners from all over the country. Imprisoning people close to their family is a good thing, but outweighed by the benefits of having a facility for cases like Hudson's - and as
emanymton suggests, other cases where the transition is less advanced. That would also mean that the medical staff would be au fait with hormone provision and so on.