I had something like that happen when I brought home Cali. It took some time before Codie finally warmed up to her but now they're totally inseperable. I use to take Codie with me to run errands and give her some special mommy only time. I would even take him by himself for a walk or take him shopping with me. I think he helped show him that I love him and the new puppy hasn't taken his place in my heart. Good luck girly. I'm sure little Hootie will come around -- she just needs some special time with her mommy.