My Leia knows who her mommy is. There's no way that someone can turn her against me. She is my girl through and through. If anyone calls her name, calls their dog, whistles for their dog, or if I am trying to call one of the other dogs I'm near, Leia is right there against my legs, looking up at me with her tail flagging back and forth. She will walk right around who she knows called her and come right to me, giving them a look like, psh. You? Nah. You don't matter.
Your dog is a puppy. They are still a pretty clean slate at that point.
My golden I was afraid wouldn't want to be with me or near me when he was a puppy. Now, I know without a doubt he won't leave me. <3 When I need him, he's always there.