Is she stargazing, sitting with her mouth open, making noises, blowing bubbles or frothing at the mouth? Those are obvious signs. As for helping till you get to the vet, you can raise the temp a few degrees to create a "fever" which helps reptiles own immune system fight the bacteria/virus. Also lowering the humidity helps too. Usually RI is caused by husbandry issues which lowers the animals own immune system so I would start by rechecking everything and be sure to use something like Chlorhexadine/Novalson or antibacterial soap between each animal so you don't spread it.