If I remember correctley Duke is the little Yorkie that you rescued right?
I am thrilled that there has been such improvement in a short amount of time...Duke's ears must have been burning with all that talk about him, LOL
Also, I believe you mentioned you were going to have your daughter (who was nipped) spend more time with him by giving treats, walking, etc. How is their relationship going? I sure hope better.
Thanks for keeping us updated and try to post some pic's of your little Duke!