Do you know if she past her due date? or past 70 days of gestation?
Ok, Give it a couple days. Try to encourage exercise as much as possible. That is the only way to help induce labor safely for cats. We can't do many of the things we do to help induce labor in humans such as spicy foods and similar old wives tales.
Exercise will help.
The only drug that can safely induce labor in cats is a prescription called oxytocin.
Believe me I have seen many many cats during pregnancy and ready to pop. They get huge and look like it you poked them with a pin they would just pop in an instant. That is normal.
Take her temperature. When a cat's body temp drops to 98-99 degrees, that means they are ready. The body temp drops when they enter stage one labor,a nd kitten are usually 24 hours away.
Also watch for her nipples to start secreting milk. That happens 24-48 hours before delivery.
Get her moving though. It will help induce labor. Play with her, get her to walk or run about the house a bit.
Good luck with your new furry family. I am sure it will just fine.