How can I calm her down without fussing over her?

what needs to happen is yall need to stop fighting around her all together she will never calm down if there is fighting! if yall want to fight take it outside. she is still scared and may always be scared she is like a kid once u scare them that's it she may come out of it just try playing with her using a loud voice maybe that might help her. start talking to her raising and lowing your voice get her used to the different sounds in yalls voices! just a thought!