I would definitly return it to her and tell her that she has not finished working the quilt. To be a quilter, she needs to clean it up and press. Tell her, that you think that it's great that she wants to become a quilter, but, there are many steps in becoming one. That she needs to clean it up, and press the seams before even thinking of quilting it. That you your quite busy right now, but, you can direct her to someone who may be able to do the quilting for her.
She certainly does not sound like a friend, has she called you, gone out anywhere at all with you in the last 2 yrs?
I would just chaulk her off your list of friends, as someone else said "with friends like that, who needs enemies"