All husbandry has been spot on for both snakes, with Carmen's cage actually a bit lower in humidity (45% instead of 60%) as of late.
No mouth breathing and not much "holding her head up" that I can tell...but she is a boa and UP is good anyway.
The vet and I agree that we've got it really early and hopefully the raised temps (now at 84 and 94) plus the Baytril will knock the RI cooties right out...