I would definitely recommend a different collar for her. You could use either the Starmark collar( https://www.amazon.com/StarMark-Training-Collar-Large-Blue/dp/B000A6BD5K/ref=sr_1_1?ie=UTF8&qid=1328160619&sr=8-1)
Or the Premiere Easy Walk Harness.
Remember to use a safety collar such as a nylon slip loop (attach leash to both harness/starmark and the slip loop) regardless of which piece of equipment you decide to go with.

You should review 2 videos prior to working on this with her:
The leash Ninja video
https://www.selfhelpdogtraining.com/Video/video/Phase1Obedience/Leash-Ninja.html?videoDetId=11df1f7f56f491ab9752d91fdbb7d463

And the New Leash Manners video :
https://www.selfhelpdogtraining.com/Video/video/Phase1Obedience/LeashMannersversion102.html?videoDetId=9b9c3274ab54d7e3a5b4627dd3de004d

Practice in as low distraction as possible. Leash manners can be a stationary exercise if she will pull even if you are standing still. As she gets a better understanding of what is expected then move to more distracting environments.

One tip is to wear her out a little bit prior to the walk. If she has a lot of restless spirit as most Bullies do, then you might want to play tug or ball with her prior to going out for a walk.

Keep us posted on your progress!