There is no excuse for bad nursing, period, be you a new grad or not.
It's very hard to follow a nurse like that and I can probably, safely say that we've all been there! There is no easy fix either - we can all shout report her but how many of us, hand on heart, have done that when we really should have. It's the culture of blaming the messenger instead of listening to the message.
I think that if her care has put pt safety at risk you need to take it higher, otherwise just speak to her, no matter how blankly she may look at you it may well be sinking in at least a little bit.
Even better - do you have a clinical nurse educator you can speak to? I found ours invaluable in a similar case, as she approached it form a learning perspective rather than seeming to be management responding to a tattle tale (which is NOT what it is but is what our society often chooses to think of it as)
I hope you get it resolved both for yours and your patients sakes!