Welcome back! We recently brought home a new Havanese puppy, Izzy, after the death of our Rex to cancer. Our older, 9.5 year old, Havanese, Leo, took about 2 weeks to warm up to Izzy but they are great buddies now. Hopefully Nina and your new puppy will form a friendship too! Don’t rush it or try to force it. Also be prepared to separate the puppy in a puppy pen when Nina has had enough. Puppies don’t really know the boundaries in the beginning.