if it's as violent as you say it is a stud chain would more than likely destroy her face. which isn't ideal.
because from the sounds of it, her pulling and fighting is more out of fear than disrespect, i'd personally slowly & very gently teach her to give to a big fat wide leather halter and after she has that pretty good i'd tie her to very forgiving elastic in that big fat wide leather halter. after a while of something simple & easy like that her fear will most likely go away.
but with all this forgiving stuff she will have probably learnt to lean on it all, so once she's confident & happy with that then's the time to ease her into a less forgiving halter and get rid of the elastic.