as said before it will come when game is about personely i would hunt the dog on its own first if just follows other dog then she does,nt seem to be competitive and she may be a little submisive to the other dog .try hideing tit bits like jerky into light cover at first and as she get into it then place the titbits into harder cover so it becomes a game with a reward when she enters and finds plus plenty of praise from you.atb .