My child had random irritability. I don't know what would help. Sometimes epsom salt baths were calming, if we could get her to take it. But of course the effect was temporary. Really, the only thing that REALLY helped my dd was IVIg. She just continued to get worse, and worse and worse until she had the IVIg. Monachat, has your child had IVIg yet?
When my dd would rage, I weighed approximately 100 pounds more than her and there is NO WAY we could do that exercise stuff, just because of the quality of her rages. Her rages at times required 3 people to hold her, for everyone's safety. Even attempting to be near stairs might have been a deadly accident waiting to happen.
Right, my son's were residual side effects - his main issue was OCD, so it was never as bad as your experience, that being said - I can see how exercise wouldn't work - it's scary how this disease effects the children all the same, BUT different - it sounds as if your daughter is on her way to recovery though.