Does anybody know how to stop a dog from nipping and biting without muzzling them? If you do, please tell! Thanks!

Assuming you're speaking of puppy nipping....
I posted an article for you in the other thread on teaching bite inhibition.
In addition to that, you can apply bitter apple or another taste deterrant to your hands prior to interacting with her. Always have toys nearby that you can redirect her to and encourage her to chew on those instead of on your hands.