https://search.yahoo.com/yhs/search?...&hsimp=yhs-003
I found this site that should show you how it is done. Much easier than me trying to explain it. I'm sure you won't have too much trouble. Be sure to charge her accordingly as it does take a bit more effort.
If this doesn't take you to the right place just put "binding a quilt with prairie points with Randa Parrish" in your search bar. Hope this helps.