That is a perfectly acceptable way to bind a quilt that is shown in many quilting how-to books. I agree with the one person. No matter what you have to scrimp in, I would invest in an answering machine with caller ID so you can tell when she is calling and not answer. When you have a "Toxic Mother" (my counselor's title, not mine) it is best to just avoid and ignore. Good luck, and don't let the nasty get to you.