I am so sorry for your loss, Millie must've been a very special girl. I haven't yet gone through what you have, but since my Bailey is getting older it does cross my mind and I wonder the same thing...would I ever be able to have another? I've decided to believe that Bailey will tell me when it's time and she'll help me pick...somehow. After my father's death, someone sent me a card that said something about the stars not really being stars at all, but the light from our loved ones watching us from above...I thought that was a really nice thing to believe in...so I believe Millie is up there watching you too...