Good luck AvaJoy! Let us know how the kitten turns out.
By the way, do you work during the day or are you at home? I'm asking because I think this will make a difference in how well the kitten learns her manners and how well Lily adjusts to the new arrival. My husband and I both work during the day, so training a kitten would have to wait until we are at home. I am not sure if we could devote enough time to do the job properly.