She is cute, it's hard to say what breed, but I'm guessing probably just a Domestic Short Hair. As for age, that too is hard to tell from pictures. I would guess maybe 8 weeks or so. A veterinarian can give you a closer idea by looking at her teeth. She is adorable.
Those are awesome eyes! I love my kitten and think he's a good-looking cat in addition to being outgoing with a fantastic disposition, but he's got plain old grey eyes. If I get another, I'm going to go for something a little more exotic hopefully. (For me, disposition is the #1 factor.)
But it must be pretty sweet to see eyes like that in the dark.