If you can, give her a sancutary that is only hers when you let her into the rest of the house. Put a baby gate across the door to a chosen room so that the dog cannot enter but the cat can. She needs to feel safe before she can assert her place in the family. My cat will put any dog in its place but only once she feels that the environment belongs to her. Lucky for my baby she has a run of the house since my ratbag dogs are outside dogs but a room should be enough to get her started.