What would an attractive person do? I always ask myself what would James Bond do. If his wife goes out do you think he's going to sit at home worrying about it and asking her a ton of questions? Or does he go out himself and have a good time, not even thinking about what she does?
And if she comes to cook with him and then leaves don't you imagine he's just going to continue about his business and not act hurt?
Yes this is probably a 180 for you. Yes it can be hard at times to not know what she's doing. But I'm pretty sure she knows you care. It's not about being mean, but it's about being a strong attractive person.