I really like both of these shots. The B&W makes her look about 3 years younger than the tight head shot which is interesting. The lighting is great in both and the color has great lighting and perfect DOF for my taste. Very nice job.
Now, share the secret of getting your kids to actually pose for you. Every time my camera comes out, they run the other way, LOL ...I don't think either of mine have the modeling bug.
She's such a beautiful young lady, you will have to have some kind of male deterrent. But I find a shotgun shell with the boy's name written on it and displayed on the mantlepiece keeps them thinking.