That's not separation anxiety. Separation anxiety is a clinical condition. Dogs with SA will often do a great deal of damage and may injure themselves when left alone. (There's more to it than that, but I've never dealt with a dog with real separation anxiety.)
What you are describing is pretty normal and after two weeks, she's still settling in. Nearly every dog I've had vacillated toward either my wife or me. One of our current dogs is quite deliberate in giving each of us an equal amount of attention. It's like he uses a timer. ("Okay, your time is up. Now I'm going across the room to snuggle with the other human.") It's endearing but unexpected and, like your dog, he's happiest when everyone (including our other dog) is together in one room.
Give her some time.
What you are describing is pretty normal and after two weeks, she's still settling in. Nearly every dog I've had vacillated toward either my wife or me. One of our current dogs is quite deliberate in giving each of us an equal amount of attention. It's like he uses a timer. ("Okay, your time is up. Now I'm going across the room to snuggle with the other human.") It's endearing but unexpected and, like your dog, he's happiest when everyone (including our other dog) is together in one room.
Give her some time.