I wouldn't use any essences on the dummy other than the ones mentioned; pheasant, etc, if any at all. Otherwise, in tracking we just rub the item (usually a glove) in our hands or carry it under our armpits (
the things we do for our dogs!
) They have exquisitly fine tuned noses so don't need much.
Just start by throwing the dummy in her sight, hold her on a stay for a couple of moments, then release with the command "Find it!". Gradually increase the distance thrown, the time interval for the wait, progressing eventually to planting the dummy out of her sight, waiting a bit then sending her to "Find it", which she will now understand what that means