I would clean the wound twice a day with the betadine or get some chlorhexidene or a wound spray like Vetericyn or Therycin, where you can just spray it. Then apply plain Neosporin or Triple Antibiotic Ointment twice a day to keep the wounds from drupying out. A lot depends on if she was compressed or cause any internal injuries while she was stuck.
Many times I have seen where a chicken was being bullied, and they would crawl into an area, and become stuck. It is also possible that why she was stuck, a predator on the other side of the fence chewed at her and pulled out feathers. So sorry this happened.
She may heal fine with good care, or she might have been injured so bad that she may need to be put down. If she can stand and take a few steps soon, that would be a good sign. If she is alert, that is another. When one is lodged between two objects, nerve damage can occur, which may affect her walking. I hope that she recovers from her wounds. Keep her in a quiet area, away from flies, separate for now, and offer food and water often. The electrolytes are very good for today.