Just be prepared for what you are about to get into if you get into this. I know you probably have a good idea, but it is a WHOLE new world when the "perverts" are sending YOUR girl messages about what they would like to do to her, about how YOU aren't good enough and they could do so much more for her and so on.
She is a pretty girl and I think given the right situation she could sell and sell well. I do agree with Paul, you aren't getting the most you can get with her..... she is a really cure girl. Guys like this pure skin type more than you'd think.
BUT, to get back to what I was saying, just think it thru and talk it out between you before you do this. The last thing you want to do is ruin your marriage, OR to decide it isn't for you AFTER you have 500 affiliates pushing the site and close up the doors on them. There is a lot more to it than throwing a site and working on it. Things get a little more personal when the girl belongs to YOU.
Just make sure you can handle the WHOLE aspect of running a site with her from all angles before jumping in and you will be fine.
She is a very cute girl.