If she just ate them then you may be able to make her vomit them up. You can read here how to do this using hydrogen peroxide
http://www.petplace.com/dogs/how-to-induce-vomiting-emesis-in-dogs/page1.aspx
If its been more than an hour I'd get her to a vet for help with supportive care for the toxins she ingested.
Tobacco does contain nicotine, and this chemical can impact on both the digestive and nervous system. Ingestion can cause rapid heart beat, collapse, coma, and even death if too much is eaten.
You can call the emergency vet or you can try a poison hotline
http://www.mspca.org/site/pp.asp?c=gtIUK4OSG&b=264356
http://www.benderplace.com/allcreaturesgreatandsmall/handy_hints.htm#Poison
Hope this helps you!
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