Hi Ed,
Sorry your family is going through this and your frog is in real need of a vet. It seems to be a bacterial infection. I don't have a recommendation as to the cure but I will suggest you email a photo and info to Dr Frye and see if he can suggest medications to help the frog.

I understand you have a vet visit tomorrow but I would also still contact Dr Frye since he is very experienced with frogs.

Here is a link to info on contacting Dr Frye and some info on meds.
http://www.frogforum.net/tree-frogs/...-prepared.html

I would include as much history and enclosure info as you can in your email to him.

Sorry I didn't have some information of so quick relief for your frog. :-(