Her choices (or is it just two views of one scarf?) are lovely. However, it's difficult to see the pattern from the photos.
Perhaps you could ask her to help you by picking out what kinds of cables she wants in the scarf. Maybe she could search for free cable patterns on Ravelry and narrow it down to one or two. Based on that information, maybe she could then tell you how she wants these cables to be arranged: one cable down the middle, two cables along the sides and something like seed stitch in between, etc., etc.
From there you would combine all your cable and filler patterns into one pattern (making sure the width is okay), do a provisional CO (as suggested by others), and begin knitting.