I didn't notice any progress with Luka while I ignored him for the longest time. Then it started paying off. We went into obedience class and it continued to get better. Him getting older has also helped. I had a really hard time with him and my boyfriend because he acted awful (always nipping his hands,etc.) with him but not with me. I had to let them spend time together and get to the point where Luka respected Josh, not only me. I know you're the major caretaker of her so I doubt that's really a problem though.
However, regardless if she's being rough intentionally or not, her nipping you (where it's causing you pain) is not acceptable. If luka gets too rough he gets a stern "Enough". Now at his current age if he accidently nips me he automatically releases my hand and starts licking me to apologize. lol
I love my dogs but at the end of the day they aren't going to nip me where it hurts me or knock me over running around like total lunatics.