When you say no and put her down for a few minutes, do you then offer the breast again?
she's old enough to understand that you don't want to feed her if she bites - so maybe just don't feed her for a while.... i know the last time DS bit me (and he DID draw blood) I flat out refused to feed him for teh rest of teh day. he was probably about the same age as your DD and teethign too. so he went probably 5-6 hours without a feed and never bit me again. just a thought