Ok, I just called the Emergency Vet. They said if she starts doing vomiting, diarrhea, or lethargy (hard to tell if it's nighttime and she's ready for bed), then I should bring her in immediately.

If none of those symptoms happen tonite, I should take her to her regular vet for a checkup tomorrow.

Brian thinks that she crunched up the chicken bone before she swallowed it, but he's not completely sure.

God, I hate this waiting around stuff. I just hope she's gonna be ok.