You may have a hard time finding a pup available before the new year- dogs ready to go by then would already be around 8 weeks or older now and therefore probably already spoken for. I suggest starting to look around for a reputable breeder, get to know them, ask about their breeding practices, testing, etc. and then get on the list for a puppy from a future litter
Sorry about your girl- I know how "empty nest" feels- hopefully you will find the perfect new addition soon!