The game did the exact same thing to me when aging a teen up. My teen was on the honor roll and still aged badly. The only thing I could think of was I hadn't taught her how to drive.
I did find my Bree file and was working on her a little. I'm thinking about putting her in a house with two more of my sims, Lainey and Genny. Not sure, though. I want to do a roomies house in Moonlight Falls. Maybe with a witch, a fairy, a wolf, and a vampire.