Carrie, if it's just a bit too short, feel free to trim down the border of the center if that will make it work. You can always add a strip on the outside to get it back to where it should be.
I'm struggling with ideas for Mona's r2 center. I think it's because it's mostly purple and that is one color I struggle with. I found a purple that should work for the background, and I've pulled out my stack of Kaffe Fasset prints to work with. Trying to figure out something using flying geese, and curves . . .
Reba - love what you've done, I'm a big fan of turning on point like that.