I agree, this does not sound good, and even if you could get her to a vet s/he may not be able to do anything. kinyonga's comments int he earlier thread about the WC laying and then dying may be what is happening.
You could try to create a little ICU setup for her in a a tank with some paper towel for floor and a branch (horizontal) or non-terry towel just so she has something to grasp on to and feel secure.
Set the tank on a raised metal screen top (or similar) on a heating pad (you want the airflow and also for the glass not to get too hot). This setup will help retain moisture and warmth, just monitor the temps very carefully. I have no idea if this will help, but maybe she will be comfortable.
It is up to you, but if/when you get to the point of losing her I am sure a regular vet would euthanize her for you and would think it would be a minimal charge. Of course, this is your decision.
If you find you can get a little fluid in her you could make bug juice (link below) or a very runny Repta-Aid (Fluker's, sold at most pet stores) so she gets some nutrition as well.
I hope none of this is the case and that she does OK.
Bug Juice
-----
Chameleon Help & Resource Info
1.0 Nosy Be Panther Chameleon - Cyrus
0.1 Veiled Chameleon - Luna. She's now hanging from her big jungle gym in the sky
1.0 Beardie - Darwin
1.1 Side-blotched lizards - Ana and Stan for now 
0.2 felines - Kyndra and Lita
0.1 African Clawed Frog - Skippy
0.1 Chilean Rose Hair Tarantula - Rosa Leigh, Died 4/21/06 
0.1 Goliath Bird-Eater Tarantula - Natasha, donated to science 4/4/06
?.? Pinktoe Tarantula - no name yet