Just follow the pattern. She was only pointing out that if you want to do a gauge swatch the pattern stitch is a multiple of 5 stitches. Though without the next row, I can't see that the first st and the last four are part of the edging since they're not an equal number, but they take up 5 sts as well. They may be part of the pattern on the next rows. If you want to make a gauge swatch, CO about 25, and follow the pattern for a few inches.