Farukh Rahim

I have an african grey with the age of 14 months almost. My mother did a mistake few months back by cutting her feathers so that he could not fly...those feathers didn't grow again but the surprising thing is that she started loosing her tail feathers as well....now i am really worried about her feathers which are not growing at all.... can anyone tell me is this her food issue or sumthng else....someone said that she might have some insects in her feathers (which i could not see)...some said that she has diet problem ...so i m confused as i am at a city where i can't find any doctor.... i hope you guys will help me up...