Mite,
My pointer loves going after the leaves blowing. He does crouch down similar to what I saw on yours, but he will move quickly at the leaves. As he has gotten older (he is currently 9 months) it has started to decrease although he still loves to chase them occasionally. I joke with my wife and say that we have an average bird dog, but probably the finest leaf dog in the state. Good luck solving your problem, but I think you may see this decrease as she gets older.
James