I just read an article at:
Popular Sweetener is Toxic for Dogs
Here is a small clip of it:
It is also beginning to be used in a broad assortment of products intended for the general public, including Jell-O sugar-free puddings and a wide variety of sugar-free gums such as Trident, Orbit, Stride, Icebreakers and Altoids.
You may wanna call an ER vet to be safe, she may have ingested some of it.