Well, my opinion, if your daughter is eager to learn about cars through experience, this is the one.
Parts, cheap and relatively esay to come across. Brake lines, you're best off making your own. You can get pre flared sections of varying length. Since you have rotted brake lines, I would suggest on the body, look around the winshield pilars towards the bottom. Any rot there means that water has traveled down the pilar and into the the only 'floor board' support wich is under the seat. consequence of this, is pretty easy to figure out.