I would give the quilt back to her, and explain that you have your own projects to do and just can't find the time to fix and quilt her quilt. Suggest she take it to a professional quilter and let them deal with her. You paid for your machines and you would have to spend your valuable time working on her quilt. If she still insists on you finishing it for her - tell her you will do it for $400.00, for the reasons listed above. That should stop her!!