I would call her and tell her the problem. Offer her options: a) you to remove the borders and correct the problem at $x per hour. b) she can take the quilt home and correct the problem and bring it back. c). Alert her to the problem and let her know some pleats or tucks may need to be made as you quilt. This way the choice is hers and the result won't be a "surprise" that reflects badly on you. It's never too late for us "old girls" to learn a few new tricks. Just be polite and have a friendly tone.