when you have "the talk" start by telling her how much you appreciate her, and then give her type written instructions, go over them with her and tell her that you realize she probably already knows all of this "stuff", but you just love your baby so much that the only way that you can relax is to explain everything...then call and check on your pup while your away.
I'd put strong emphasis on important safety issues, and not worry too much about the behavior issues.
Be really sweet to her and tell her how much you worry. Also, bring her a really nice gift with a thank-you note when you get back.
