Hasn't this happened to most of us! I know that this is usually my pattern- see new project, jump right in the middle of the process with out starting at begining and learning basic terchniques and then having mess and want to stop. I think that your friend is not unusual. Correct her mistakes and then asked her if she want you to show her the basics. Quilting is not hard but there are techniques that make it easier. I think that it is easier to learn from other people's mistakes and methods. At least she did not throw the fabric away!