I found a
couple of panels here, you might be able to do something with them.
I remember that line, it was very pretty and popular, I agree you will have a hard time finding any. You might be better off searching for individual fabrics from that line. The link lists the skus under each fabric, I have found that using search terms such as "holly taylor river journey 6638-12" or "river journey 6638-12" will return a lot more results. Also, use Google for this search. I normally don't, but I have found that when I'm looking for a specific fabric, Google's algorithms have been able to find fabrics that other search engines don't.
Good luck!