For those who like new ideas for solving couch clawing:

http://www.birminghamind.com/Scratchaway/index.html

That looks like a good product. I have a scratchy tree right next to the edge
of my couch for this reason. Maybe this wouldn't be as unobtrusive. I hope it
wouldn't encourage her to scratch the couch. She's never scratched the couch
with the scratchy tree right there and I mean the scratchy tree base is under
the couch leg. Thanks