May I understand your reluctance to go elsewhere, I did the same thing for years. Take your next quilt to her (preferably one that's not on a deadline) and really pin her down on delivery date and tell her it's a must that you have it back on time. I would then start calling her about a week and a half before it's due and ask if she's going to be on time. If she fails to meet the deadline I would make sure (in a roundabout way) she knows that the next quilt will go to someone else. The LAr I used for years took over two months to do a quilt; did it totally wrong and not what I had asked for, then took another three months to fix it. She knows I'm still making quilts and she hasn't gotten any of them to quilt.