Baby was rejected by mom and is now struggling.

I have a chick that was seemingly rejected by mom, found her on the edge of the roost cold slimy and barely moving. She looked dead, but her body wasn’t stiff and her leg slightly moved. I rubbed her belly and she started gasping for air. Luckily I have another hen that’s brooding so I put the chick under her so the chick could warm up. The chick perked up pretty fast, she’s fully warm and fluffy now. I gave her to another one of my hens that just hatched a buttload of babies this morning and luckily the hen accepted her. I gave her electrolytes by dunking her beak in the water waiting for her to finish swallowing and then dunking her beak in again. She won’t eat or drink on her own though. She’s still very wobbly, cant stand, and can’t walk very well. The only good signs are that she’s fighting to walk and chirps very very loud when the hen walks away. What else can I do for her? Was she too close to death to now succeed? Any help is much appreciated, I would love to see this baby succeed