i would stop for the minute doing anything that makes her rect so strongly - for the moment, jut stick to what she is happy with you doing, or mildly worried about., so for instance if she is fine being touched above the knee, but gets progresively more worried as you go down towards the foot, then start just touching just below the knee, when she's happy with that, move to mid-cannon, then to fetlock when she is happy with mid-cannon, and then move on to picking them up when she is happy to be touched right down t othe hoof.
if she is so scared that she is falling over and panicking, then every time she does that she is reinforcing to herself that it's a bad thing, you need to break that cycle by making it a non-scary thing to happen, so for he moment bak off picking them up, don't insist - it won;t do any harm not to have her feet picked out for a while. go slowly and gradually and take your time.