Besides the obvious suggestions of building a trusting and confidential relationship, I would ask her what she'd like to get out of ...

... this mentorship.

just remember you can learn for her too. I was a mentor teacher last year, and she taught me just as much as I taught her.

Don't forget to let her make her own mistakes.

Remember she will do things differently. It's not how it is done that's important...it's the outcome that is.