[FirstYorkie]

I think that Sadie is still allowing Zoey her "puppy license". Dogs will allow puppies to get away with alot that they would never tolerate from an older dog. I expect that Sadie will eventually put Zoey in her place (it might not be pretty, but it needs to happen).

In the meantime, in your presence, I'd let them work it out for themselves (like Jeanie said). If you are unsure of either dog's safety, separate them when you can't supervise them. And, as Linda said, there is nothing wrong with putting them away separately when you've had enough.

Good luck! I hope you'll be feeling better soon!