Great. Thanks for the additional information. I really appreciate it.
Because mouse baits and rat baits are incredibly toxic to dogs if ingested to dogs and rodents. Baits like this kill rodents by interfering with the clotting cascade, which essentially causes the rodent to have problems with their blood. It also does the same thing to dogs when they eat it, so getting him in to see a vet sooner, rather than later is the key to making a full recovery.
Before heading out to the vet, you can attempt to get her to vomit at home. You can give her up to 3 teaspoons at once and then give it about 5 minutes to see if she vomits. If she doesn't, then you can give her a second dose. Since it's been about 30 minutes since she ate it, odds are that she has already absorbed a little, so even if you get her to vomit, she should be seen by an emergency vet tonight.
They'll induce vomiting again and then get her started on an IV to flush her system and get her started on some Vitamin K to help keep any more of the poison from being absorbed into her system.
There's more information on ingestion of rodenticide here:
I hope this helps.