I didn't mark on the picture before uploading but as you can see the setting triangles are all biased edges and I don't have enough fabric to redo it. The thing I don't understand is how she didn't realize what she was doing. I am just hoping that my quilt comes out as flat and pretty as hers did. Thanks to everyone who responded I did try to attach some interfacing on a smaller piece of the fabric on the diagonal and because I was trying to do it on what I already had done it did not work. I hope that makes sense.