It is heartbreaking to have been through what the two of you have had to go through. Only you can make that decision based on the vets advice. Junglefries, you are a star! It would be wonderful for syco!
Imo if your cham stays out a few days it will be great, temps are all in range except for 90+ . The rain is the same as misting and as long as she is hydrated don't foresee any issues. Keep a close eye and all will be great. Just make sure there is sufficient shade in case.