Right I have 4 rats (well actually 6 but 2 are in a diff cage) who I've had prob for about 6 months, one of them (my blokes favorite) Baldrick is perfectly happy running around jumping on you etc etc when there is only one person in the room, any more than that & she runs off and hides for hours, shes fine when shes in her cage & there is often people walking past her & stroking her through the cage bars and shes fine but as soon as shes out the cage with more than one person shes jumping at any sudden movement/noise, is there anything i can do to make her less nervous?