knowing a budget would make it easier to let you know what's available.
Xti or XSi wouldn't be a bad start for a body, if she likes nikon, D60 or D80 would be nice.
Let us know the budget ballpark and we can suggest lenses. Going telephoto can go from $50-100 for a 70-300mm kit lens to $1700 for a 70-200 F2.8 L IS. something wider like a 18-55 kit lens would run you pretty cheap. 17-85 F4-5.6 IS would be a little better. Maybe the nikon guys can suggest some choices, these are Canon lenses. The kit lenses are all cheaper, obviously alot more affordable, but are also lower quality. Going to a Sigma or Tamron can get you the same lens for cheaper. They do have a tendancy to be cheaper for a reason though.