Welcome to YT, and congrats on the new baby. She is little!!
I have 3 other dogs besides my little Teddie, who is now almost 18 weeks. I got him 6 weeks ago and he is in good with the other 3 now. I have 2 large dogs and got him used to them, and them him, slowly. I have great command over them so I felt comfortable. Balance, our black lab, took to Teddie first. He sniffed him, barked in his face loudly, then proceeded to act like a proud poppa.
It took the other 2 dogs a little longer. Our German shep mix is fine with new additions as long as it isn't a female like her. Our pom was hardest, as he was our baby, but he got used to Teddie in a week. My advice is to just be slow, let them sniff around one another and with mine I say "Niiiiiiice." They know this command to keep them calm and friendly. Good luck and enjoy your baby and the site...it is chock full of all the information you could ever need, and everyone seems so friendly and helpful.
