My big dog ate half of my small dog's Nylabone (plastic/nylon chewable bone)...what should I do?

I gave both dogs appropriate size chew bones. When I got back, my 60lb dog had gotten a hold of my 10lb dog's bone and eaten half of it. The bones are made of plastic, nylon, and rubber and are hard. The directions say to call a vet, but it's late and I'm broke :( Should I wait it out, or take her to an emergency vet?