Originally Posted by Maride
I would say, even if she makes something small, she should start simple. Anything a little complicated before she as the skills will get her disappointed and may not want to go on quilting. My daughter started at 13 with a 9 patch. She learned to cut, match corners, strip piece, coordinate fabrics, all in one project. She now doesn't quilt much because she doesn't have the time, but goes back to it any time she gets a chance.
I think a nine patch is the best to start with. You can modify it to make it as simple or complicated as she wants or as her skills dictate. Also, you may want to start with a lap quilt so that she doesn't loose interest before it is done. I know that when I am getting to the end of doing a big project I am anxious to get it done and more on to the next.