The problem with side-quest \"translation\" (Kingdom Come: Deliverance)

The Miller at his mill near Ledecko caught Polovets and agreed to transmit it glavgeroyu for the penalty under the law.
But the Polovtsian not talking and not coming out of the camera. All that you can do with it is to knock her out and steal.
How to transport it? This is a bug, or I need to find a cart of some kind, or just to cut down and drag over the hump? Do not understand, save.