Sometimes, OK, most of the time you learn more from your failures than your successes.
It is not something I'm proud of, but I have snooped, too, a while back and H found out because I told him. I told him that I was so upset about him making a fool of me, that I ended up making a fool of myself. Talk about embarrassment. I also told him I wouldn't do it again because it wasn't "me" to be jealous. I chalk it up to a lesson in humility.
It may have been a big DB mistake, but the peace I have knowing that my conscience is clear is priceless.
Just remember, your snooping won't change her behavior. And it is not in your best interest because it makes you miserable.