Amber is pretty much just a normal civilian in the household, since she lacks the natural blood lust most of the others have. 

That being said, since she is a (somewhat) normal person, she quite often has nightmares about the residents of the manor, and in these dreams, she will think she is being brutally murdered, since she has seen the many vicious ways the Creepypastas use to kill. Just when she is on the verge of death in her dream, however, she will wake up sweating and shaking like a small leaf on a windy day. Sometimes screaming, too, if the dream was especially terrifying.