[The most minor of reassurances is that she's only heard the rumors, instead of having to experience it for herself. He's just... gonna fully get down on her level here, crouching down so that they can be having a truly private conversation.]

I'll be careful about him. And you never have to worry about scaring me, alright? [He points to the perma-grin of his skull.] I'm a skeleton, I can handle all the scary you can throw at me.