What if the weather suddenly took a turn for the worse?  A cyclone could force the party to stay inside the Asylum - that could give a pretext for more exploration.  Danae and Aloisa could decide that with Dr Blanche 'fleeing', the Asylum is relatively secure, or at least parts of it are.  That would give us a basis for yet more exploration.  Danaae's curiosity may get the better of her, and she might search the personal quarters of Noire, Heinforth etc.  This should allow for the build up of some dread/angst, and hopefully some smut.