You can't always feel a special connection between each dog you own. I love all of my dogs, but Tango is the only one of mine that I actually feel connected with and I hate to say it, but yes, I obviously do have a favourite between my dogs. Give it time, you may never feel a connection with her but that's ok. She's still loved by the rest of your family and I'm sure you must love her too. This other BC will find a great home, I'm sure.