How do get my dogs to be friends?

Do meet and greets on leashes and only for seconds at a time. Have the puppy relaxed and laying down across the room. Have the BF a safe distance away so she is not having anxiety. Begin by getting her to look at the puppy and each time she looks and is calm, give her a nice food reward. You can continue to move closer and closer. Do walks with the BF following the puppy and allow her to do the sniff when she is ready. I would not want her to be in situations where she is really fearful and shaking. She will never get over it if it is forced on her. It has to be a gradual introduction so she knows she is not going to be hurt. She should, with time, feel less and less threatened. You really need to do this now as the puppy will be huge with time and size will become more of an issue. With patience and training, it will work out eventually. best of luck.