Upload & Sell: Off
Does "her daughter" understand all the reasons and benefits of upgrading? Aperture, shutter speeds, ISO, lighting, composition and they way they all relate? If "her daughter" is shooting in green mode and is happy that way, don't suggest any gear. Is she interested in photography for the sake of creating images or just taking snapshots? There's a huge difference. If she does, understand all that and has a decent knowledge of Manual, AV and TV modes, then maybe a fixed focal length would be a very nice addition, and the Canon 35 f/2 or Sigma 30 f/1.4 might be great considerations for her.