Lizzie..Im so sorry .
Its very hard for anyone to help you as we are not qualified and wouldn't want to steer you wrong. Im sorry you are unable to find a vet to help.

I know you recently lost your Whites tree frog also and that you had only had her/him a short time which to me sounds like he /she may have already been sick when you received him/her. Im not sure how long you had your Red eyed tree frog but that also could be the case. Do you have photo's of your enclosures. That may also help.