It is possible that she has miscarried, but it's virtually impossible to tell with a mere description over the internet. It is also possible that she went into labor but her body has since stopped contracting and the kit is stuck in the vaginal canal. If the baby is stuck in the vaginal canal, she needs to be seen immediately. I would suggest that you start calling emergency facilities in the area, considering it's Sunday and most regular clinics aren't open.
In the future, here is one vet in Dallas who is experienced with chinchillas:
Coit Road Animal Hospital
Dr. Wiggs
12600 Coit Road in Dallas
(972)239-2111