Budgie tongue

Hi, I have a beautiful blue female budgie who is being targeted for quite sometime by my other yellow female budgie. Her attacks are so severe now that i fear she’s going to kill her. I separated them but blue budgie got several injuries on nose and some blood stains as well on her beak probably from tongue injury. She’s shivering and looks weak. I cleaned her wound with saline water but dont know what to do for her oral injury. Please help me what to do. Thanks