I think we looked at males, but it's also probable there are both males and females who work for Goshi. I think in terms of Kurama or Yoko breaking the control when Botan is saved, would depend if we want one of Goshi's close servants/slaves to be captured sooner as opposed to later. I think if Kurama exudes enough energy, it could be enough to thwart their hold on Botan. It might also be a possibility in which Kurama and Botan do something to secure the school itself. Maybe Genkai could help with a protective ward?