Thank you soooo much, all of you!!!! :D :D
The border/backing was from Walmart, and I bought the last of what the store nearest me had. It's one of those they don't reorder. And used all but 3" on Christie's quilt. But found some more at another Walmart store, for me this time! :D
And Karla, Darren, and Minstrel - you'd be surprised how totally easy, fast, and FUN this is to make!