Yeah, I rethought that myself. The asking her out part. That's pretty soon for some, especially if you're not sure. Why not just...enjoy her there while you go in to the restaurant? Nothing wrong with crushing on someone that way, gathering more info, chit chatting, etc. Maybe there will be a moment in the future where the time will feel more right to ask her out. Or you will say "Heck with it," and just do it. It doesn't have to be now.