Thanks for the above posts.
Her interests are all over the place. Her main activity is dance when she is with her mother. With me she likes to ride horses, ATV, and motorcycle, as well as shooting - all which make her mother irritated. Bonus for me. Not sure where any of her interests would lead to a destination, other than getting out on the bike.
As for her topics of study... unfortunately her geography class has been focused on everywhere except the US.
She will be here visiting this weekend, and I hope to get some more input from her on the summer trip. We do ride the river (Mississippi) quite a bit since it has nice roads and is near by. We have never went north of Hastings.I like the idea of South Dakota. I have a good friend just outside of Custer that has offered a place to stay if we get out there. Also the UP is high on my list. Could make it a 3 generation ride with my dad.
Thanks again.