You're very welcome. I'm very sorry for my late reply...
[From Below]
Short term plan:
1. A broad spectrum anti biotic (won't do any harm even if not an infection). Something field expedient like FishMox will hit Gram Test Positive and Negative pathogens.
2. Good hydration and yes--easy to eat foods like your kitten food.
3. Give comfort and monitor until you can mobilize Mohawk to a Vet.
Right. So if it was just one closed eye but normal energy, eating and moving well, then I feel you would not be so worried enough as to post this morning. I see how worried you are. The lethargy can indicate a bigger issue. We now start thinking something infectious may also be a possibility. (May it not be something too intense). But this is where something like a broad spectrum anti-biotic comes in. (Wondering if you have anything?)
She is so cute--no, just beautiful, and obviously in wonderful condition, from how she appears even in your pic there...
Lethargy could be as simple as pain, but I don't like betting on that only. We must be ready for the more intense of problems. You know your flock, yourself--and know she's just not acting right today, right? Trust your instinct, number one. I also can feel from over here just how much you love her and want her to be okay. I see your concern for her. Animals are perceptive and she gets it
(My little hen does, when she is in troubles).
Perfect--that you moved Mohawk out to the medical cage. (Goodness! You really are very aware and wow... you even have such as a medical cage. Brilliant!) Absolutely--you're going great here, doing everything just right: Nutridrench and wet kitten food. You're very aware, and you probably have picked up on something very very quickly. (This is what I do, too). So it is sometimes hard to pick what is going on. The earliest symptoms can often be the most vague, giving us little to go by. I feel you may not have an antibiotic available. Ok. Then it will be a case of supportive measures--good hydration (given the nasty heat especially). Something "primitive" and basic such as cinnamon and oregano people have used (I have used) to treat all manner of things, (bacterial and viral), when really pushed, and could be a way-out possiblity until you can get something else. Even something like FishMox (penicillin for aquarium fish, and available at most good pet stores) can be used for poultry in a "field expedient" sense.
Aw. I know how it is when your med kit proves a little low on the right supplies (be kind to yourself, you're getting this right). I sense she is in good condition and will wait for vet intervention and the Rx (good med term!) Yes, some sterile saline and such will be right on the target. But don't beat up on yourself, please.
I know how rotten it feels when you're little hen is doing fine yesterday and there's a big downturn overnight. Then, it could be very early signs of a bigger infection. Marek's all the way to Coryza to whatever they got next against our chickens. Might pull up short of something as dire as Marek's. There is a host of things else. Lethargy could be a sign of pain, but I sense you doubt it or sense something else is at work.
Short term plan:
1. A broad spectrum anti biotic (won't do any harm even if not an infection). Something field expedient like FishMox will hit Gram Test Positive and Negative pathogens.
2. Good hydration and yes--easy to eat foods like your kitten food.
3. Give comfort and monitor until you can mobilize Mohawk to a Vet.
Never give anything away online, please, since you never know who is watching and why. But I sense education about you, an active mind, maybe training in medicine, or an interest in medicine, or someone involved in medicine in your world? Not too sure
But I feel a very practical and systematic way about you. This is why Mohawk will be ok--you're in-tune, and see things right away, without being over-zealous. I sense she will be ok over all. (Said one guy who once studied med to you...)
Be blessed. This will be rough for a couple of days. But I sense she will do okay, thanks to your quick action and by your not dismissing anything
Ah, and Wedding! These things always happen at the most inopportune of times. And a trustworthy person to watch her as you go, just perfect. Giving them any sort of action plan ( in case of down turn) might be something too... "In case of .... then please do .... ". I hope nothing I have said sounds too patronizing.
Blessings to you. This will be ok.
and of course, I leave this afternoon for a wedding and won’t be back till AM but luckily I have a great person watching my animals and staying with them. 
