[Anonymous]

Is she drinking water? Have you tried a little chicken broth on the food?
A bite of broiled chicken liver?

Make sure she has fresh water, but if she still has no appetite for 72 hours in a row, I would see the vet.
If you decide to go back to homemade, you may find some tips here http://www.homeovet.net/dynamic/php/downloads/dog-c8470f2c75dbe4b683205c3919ee2310/dog_diet_complete.pdf

Good luck.

PS: Could she be sick from a bad batch of dog food?