On Monday when Jacob came to see her, anyone near Pearl's room would have probably heard thunder and perhaps seen lightening flashing from inside the room, if they happened to glance in they would have seen the rain too. There was also shouting between them and then the tears in the hallway.
Of course this also means when Mandy got into their room she would have seen a hole in the floor and the entire place would have been soaked. Up to you Jacqui if you want to thread that with the girls or quite possible Pearl dissapeared from the room again. :)
Edit: Ok so Mike has just reminded me there is a chance the rain shorted some of the electrics too.... Ooops.