When machine quilters have a long turn-around time, but they generally tell their customers that up front. I would be embarrassed if I kept a customer's quilt for 3-4 months without getting it done or at least calling them and letting them know I was running behind or had some sort of problem. If I were you, I would call her and tell her that you are coming to pick up your quilts and why, get your quilts and find another good longarmer to quilt for you.