Ok Too's are notoriously difficult in some ways but I'd ask about her schedule. They both need to be on a strict natural daylight schedule. Including dusk and dawn. It's winter in North America and they need sleep getting ready for spring. They have a sensor in the brain that controls the metabolism. Via light. A cover isnt enough either, really. An overtired bird is a grouchy, nervous and aggressive bird. Also decrease the protein and vitamin e. Turn off all the lights an hour before dusk and let her/them go to sleep in a quiet room with no tv, computers lights, flashing, or human noise. She will have needed to eat before then like in nature, from about 2-3 till dusk.
This may not solve all your problems but until her hormones and metabolism are back in balance and getting the right sleep you wont have a baseline. This is also what triggers breeding behavior. YOu should see an improvement in two weeks or so but some see it immediately. I think it's important before other problems develop to at least get the basics nailed down. Including diet.
Read this mistake I made today causing a nervous bird and how I fixed it: (but my birds follow a natural daylight schedule and this was once, nothing long term):
http://birdboard.com/forum/showthrea...053#post295053