You can try to save her but it doesn't look good. Nature has a way of "selecting" those to live and unfortunately, she's not the prime candidate. If she lives, you will have to feed her and see and hear for her her whole life. I'd let her go. It's more humane than prolonging her pain. If...
She may not survive. I don't think it's a good idea to "force feed" her. In the long run that is not really helpful. Think like a mama hen. They peck the ground showing the chick where and what to eat. I have found to get little chicks started, I use my finger to tap the feed. That usually...