Seriously though, it'll depend on her style. I'd suggest something middle of the road and go from there. For example, if you get a Crucial, but she struggles with rotation and doesn't hook the ball much, and she joins a league where they run heavy oil, she may get frustrated pretty quick. Vice versa with a hooking ball in a dry house if she hooks it.
I got a buddy that has bowled 3 times in the 15 years I've known him... but he has a TON of hand (if he had any interest in the game he'd be pretty good with a tweak here and there). I also see new folks that would struggle to get a 4th rev on the 100 ft lane and need all the help from a ball that they can get.
Back to the question, I don't think you can really go wrong with any of the choices without going more into her style. I'd suggest easing in pricewise and performance wise... perhaps a newer Power Strike, or the Judgement has long been a great benchmark ball of ours. Either way, keep us posted.