You already wrote up the information for it, remove the pessimistic comments and rewrite the information for them. Write out/quote proper husbandry information for them, include links wherever possible. Then email it to them. If conditions havent changed in a couple weeks and the animal doesnt look like it's getting healthier, go in, speak with whatever manager is there, talk to them, give them a printed version of the e-mail, and then hopefully that will get things changed.