Hello,I would love to help I just have a few additional questions. After your reply please allow a few minutes for me to type your answer.
Can you tell me what the active ingredient or what tomcat this was(ultra, quickstrike etc)
Bromadiolone is the active ingredient. This is a serious anticoagulant and does require veterinary care.
Even though it was vomited up there is still a huge risk of depleting the vitamin K resulting in the dog being unable to clot the blood.
Vitamin K therapy is needed for 14-21 days to prevent any internal bleeding. I would suggest having her seen at your local animal emergency so they can test the blood and get started on the Vitamin K.
I would not put this off. It can take up to 5 days to see any problems however by the time symptoms develop it is often to late to save the dog.
Here is additional information on rat poison
I hope she does ok, please reply back if you have additional questions or concerns