You should put a bandage thingie on her head to decrease the pain and feed her/him very basic food and keep it right next to her. Make sure that she is comfortable and do what ever you have been doing. Once she gets hungry enough she will eat. It will take time though
What I would do is do what you did but just make sure it is not to tight because that can make it worse! Then you should probably just let it relax and either see a vet or just wait and see if it will get better