Well .. she is less than 2 years .. she like to have seeds only .. tried hard to change its dait but she throw any thing else.
I spend almost 3 to 4 hur daily .. full day on Thursday and Friday .. some time I took her out where ever I go.
Then I would say as long as she is still active, eating and drinking normally and her poo still looks normal, she is probably just going through a heavy molt.
This is just my opinion, I'm not an avian vet. If you are still worried I would get her in to have a check up at a qualified avian vet as soon as you can.