Hi familyh12,
The first thing I want to suggest is to take the bone/chews away before they get too small so that she puts the whole thing in her mouth. It will be difficult and sometimes even dangerous to take it away.
I am the leader of the pack and very confident so I can take any small pieces of food/chew out of the mouth of my dogs by opening the mouth with one hand and grab it out but I am not recommending it in your case. So the best way is not to let her have it if you can not take it away.
Once she masters "Leave it" then move on to "Drop it".
Give a toy in front of her and tell her to "Leave it". Then, tell her to "Take it". When she picks it up praise and treat right away. Now tell her to "Drop it" when she does, praise and treat. Repeat this as you change object to more valuable thing. Also, when you see her having something she is not supposed to have in her mouth, such as a shoe or a sock, tell her to drop it.
When she master this, then offer her a huge piece of rawhide with one hand as you hold a treat in the other hand (this treat should be a very good one, such as liver treat, etc.). Have her chew on the rawhide for a few minutes and tell her to "Drop it" as you offer the $100 treat
.
This is like an exchange game. Let her chew the rawhide a little more, then have her "Drop it". After repeating this a few times put the rawhide away for tomorrow. You are the one who initiates this game and also who ends this game.
Hope this will work
