Thank goodness she doesn't eat this stuff, just chew it up! Fortunately, the other bone I got is the other style and is holding up nicely.
Tish, in the comments, suggested another brand of bone which I'm going to try when the new bone is all chewed up. She also suggested getting under the fridge with one of those bamboo sticks which is a really great idea except that I'm a little afraid of what else will come out of there. I'll just save that idea for a day when I'm on one of those cleaning jags. Thanks Tish!