Hi Sue,
          As far as helping your horse  accept the picking up and holding of her hooves:  To give her hoof to  someone is a big trust issue for a horse.  As a prey animal, having use of  their feet at all times is vital for fleeing danger and survival.  As  you begin doing the Six Keys exercises with her you will be developing a  relationship of respect and trust which will enable her to be more willing to  give you her foot.
          I would advise having your  farrier slow down and take a little time to make 
            friends with your horse.  He should just rub her all over with a steady 
            rythym, find some itchy spots and do some brushing.  Maybe even lead her 
            around, take her for a short walk and offer her a little of her feed in a 
            bucket.  Then when he tries to pick up her feet he is doing so as a friend 
            she knows and trusts instead of as a stranger who is trying to take her foot  away.  He should be calm and patient with her, keep her foot as low and  straight under her as possible and not try to hold it for a long time without  putting it down to let her 
            rest.  She will need to know that when he takes her foot he will give it 
            back soon.  When he gives it back he should set it down easily, not just  drop it.
  
            To help prepare her for the farrier, you should spend plenty of time 
            handling her feet. If it is difficult for you to pick up and hold her hoof, do  so at first using an 8 - 10 foot length of thick cotton rope.  This type  of rope will prevent rope burns.  Take a couple of wraps around the  pastern with the middle of the rope, then hold both ends and gently and slowly  pull her foot slightly off the ground with the rope.  Keep the foot low  and directly under her.  Hold it for a second then let it right back  down.  In this way she will learn to stand on three legs and to trust you  to give her hoof right back to her.  Try to set it down before she gets  upset or jerks it away.  At first you may have to set it down quickly,  almost as soon as you pick it up.  That's ok.  As you continue  to do this numerous times over several sessions you will gradually begin to be  able to hold the hoof up for longer periods of time.  Using the rope to  pick up the hoof will save your back and keep you away from possible flailing  hooves.  
          Throw out the old notion of  having to hold the foot until she quits fighting.  This is not a  battle.  Don't make it one or you will accomplish nothing more  than teaching her how to beat you.  We are not physically superior to  horses.  They will always win if we challenge them on a physical  level.  Use your intellect, the only area in which we are superior to the  horse, to help her through this difficult time in her life.  Be the  patient, confident leader she needs and wants. 
                      If after all this patient  work she continues to resist the farrier, give her 
            something to do that is more work than resisting, for example asking her to 
            do lots of backing with energy is a constructive consequence.  You will be 
            making the right thing (standing calmly for the farrier) easy or comfortable 
            and the wrong thing (resisting the farrier) difficult by causing her to have 
            to work hard at backing up quickly.  Backing is always good for horses 
            anyway.  Having a horse back up for misbehavior is like you having to do 
            push ups for misbehavior.  It is constructive (good exercise) but not 
            necessarily something you would want to do.
            
            Sincrerely,
            Ed
          