You can look for a used Canon 40D or t2i or maybe you can find a deal on a T3i this Holiday season.
If she's into the occasional Videography the T3i would be great, the swivel screen makes a difference when shooing low angle shots.
Also if you have money left over, make sure to pick up a nifty fifty (50 mm lens), their relatively cheap but with the right eye you can take some very high quality shots.