How old is your DD and at what sort of college would she take classes? I am just wondering since I doubt most colleges around here would allow that (since they are fairly selective schools). Don't know if you would want to take a course at a less selective school either.

While I don't advocate prepping for these tests when the kid is younger than HS age, they should do a couple of practice sections to understand the type of question and timing. Why don't you have her do a practice test of each (at least the verbal sections, since that is your focus) and score them? Don't know your target score, but that would give you an idea of where she stands. And if she practiced both tests, you could see which is better for her. I think the verbal on the ACT is easier for a young kid, but the math would be tougher since she would not have seen that math yet.