I might've been the one mentioned SketchUp. I think she'll get great long term life mileage out of SketchUp skills particularly with the dawn of home 3d printers. Does the project really need a specific tangible outcome? Learning SketchUp to develop enough skill to model things should be its own end. To formalize it, her teacher could help her identify measurable learning objectives. Perhaps an outcome could include teaching classmates some of the basics.