First I would like to say congrats to ur new adoption! N second I think she will b ok once she gets used to everything and starts to warm up. Do u crate her at night? If so, try putting a bowl of water in with her and see if she drinks any while she is in there and nobody is around. Or if you happen to leave the house for a little while, even to just go out in your yard for a little while, put down a handful of food and water and see if it has been touched when u return. Everything is still brand new to her so I would just give her some time.