What to do with Nefertiti..?

Today I brought home a new kitten (posted in strays and ferals about an hour a go)! She is lovely but I think she has been brought up in the wild and is certainly not used to humans! Right now little 8 week old Nefertiti is sat underneath the book shelf (a very small space). She's stook her head out to have some food when i put it next to her spot she poked her tiny head out to eat. At first when she came home ( a few hours a go) she backed herself up in the corner in the kitchen. Caspian is now shut in the kitchen poor darling but he paws at Nefertiti and she doesnt see it as a game. She is very scared, as soon as I reach my hand beneath the book case she hisses at me. I did have her on my knee for about ten minutes while I was typing and i stroked her but she was very rigid and only there as Id placed her there. I think she is ok beneath the bookcase, its "safe" for here there but I am worried, as its almost bed time, I dont want to leave Caspian in the kitchen. I'm worried she wont use the tray. I'm worried shes stressed. Any advice on coaxing out a nervous shy kitten? But I guess I shouldn't expect too much after all this is her first day here!!!

I suggest leaving her alone. She will see overtures as threatening. When she is good and ready her feline curiosity will lead her to explore the environment.

As long as she is eating, she's probably OK. I would suggest leaving her alone, maybe sitting in the room quietly, read a book, generally ignore her. Don't stare! (although it's hard not to look at a new cutie in the house )

As others have noted, eventually feline curiosity will get the better of her.

I agree with the others. She's very young and cats hate change. You're asking a lot to expect her to be outgoing just a few hours after coming to your home. Give her time.

I really like her name by the way. One of my cats is named Seti.