You try to be polite and introduce yourself. You get much of a cold shoulder for it, but her name.
"It is Meira."
You cut straight to the point and ask what the hell shes doing. She begins to stand up and grab her sword on that.
"I'm taking this shrine's power for my own, its easy pickings without it's maiden. The barrier is to keep pests like you out. I don't even know how you got in here. And I could care less if you're one of the old fools who think Hakurei was a god send. The only thing that matters is power, and she doesn't have any dead."
You're pretty sure this is hostile of her.
Wow, didn't see that one coming! Looks like she never gave up on getting the Hakurei Power after all!
But, wait....this actually solves our quest!
Meira is a human, and we need a human Shrine Maiden! She's apparently already absorbing the power of Hakurei, so maybe if we let her do her thing, the barrier will be restored! ....though, from the looks of it, she isn't a very nice Shrine Maiden, particulary against youkai....
> Try and ask her if she has any interest's in becoming the new barrier maiden.