Chicken fell - Help

My chicken fell this morning, she can't walk now. Nothing seems to be broken, maybe a slipped tendon? It's just one of her legs. There's no bird vet anywhere near or far where I live. I immobilized her leg, made a little splint and have her in a makeshift sling. I also gave her a raw fresh egg for strength, just in case, and electrolytes in her water. Any tips or advice? Anything else I should be doing for her?