I would put some baking soda out for her to eat. That will help with any bloat. It'll prevent it, also 
I would also worm her. I use Noromectin, it's the Ivomec generic, so a lot cheaper. Get the injectable kind, and give it orally.
Are you sure grinding her teeth, and not chewing her cud?
As for the breed, I would say Nubian/Alpine mix. Make sure to get her a buddy soon, they do best in pairs at least!
I would also worm her. I use Noromectin, it's the Ivomec generic, so a lot cheaper. Get the injectable kind, and give it orally.
Are you sure grinding her teeth, and not chewing her cud?
As for the breed, I would say Nubian/Alpine mix. Make sure to get her a buddy soon, they do best in pairs at least!