too much time on square bars or dowel perches can cause foot problems. Make sure she has a variety of different size and grip perches to use everyday and sleep on..
As she is also doing it in her sleep it could be a nerve issue and related to “toe tapping“ which can affect any species, not just eclectus. Most People seem to think this is often diet related. Has her diet changed ? Fruit not being washed. I found my boy does this to plants in the brassica family. Which is hard in the UK as most supermarket plants here are from Northern hemisphere brassica. so I often have to source from a different shop. it could be a good idea also weigh her regularly.
re the itching, it again could be an irritant in the food,or environment(air fresheners are toxic including the plug ins, deodorant, cigarettes) or a dry environment/high central heating etc, try to bathe or spray.. her you could also give her a drop of organic coconut oil in her food, that’s easily found In a supermarket: some one else said this worked for them. There’s lots of things that could cause itching.
The eating less could be because you’re not there, so a sign of stress,
i hope you can get it solved when you get back.