Hopefully someone will have some beneficial advice. You took the hard running mill out of the equation as well as being early on in keep, so I'm out. Another thing I would rule out is dehydration, as well as any supplements that could be causing her to be jittery. Hydration is critical in flushing toxins from the body.

I myself have become ultra sensitive to any medication or supplements as I've aged. I don't like taking much more than an ibuprofen and some few vitamins when needed. So I'd rule that out as a possibility. I'm always learning but I think the lactic acid would cause more cramping post workout? Does she expel a lot of white froth during workout?