Congratulations on a job well done! I think at her age you are very fortunate to have been able to teach her to use the litter box so quickly. I hope she doesn't have any accidents and you are able to keep her using the litter box. I have never tried using one, but it sure sounds like a good idea for anyone in an apartment, or without a safe yard for their babies. We have a fenced yard inside another fenced area, and ours go out with the "big kids" and seem to catch on very quickly. (I'm convinced it is easier for the puppies to learn from the grown up dogs than it is to learn from us. LOL)