What do you think so far?

Sounds good to me! For the most part it's well-written and exciting. My honest advice would be to cut back on some bits of description. If you tell us he has a rough voice, why add harsh too? You may find some other instances where the extra description isn't necessary. For example, if she is saying "M-me?" then you don't have to follow up with stammered, because you just showed us she is stammering. You know what I mean? Sometimes a simple 'said' is the best choice (or nothing at all, if it's clear who's talking). Overall a nice piece of writing. Good luck with your story!