I think she has the gular edema - the " lump" on her shoulder, in the 2nd pic- looks like one of the fluid filled things Olive gets when gravid - they will also show up under her arm pits- and around her neck - but poor thing - she really needs to see a vet ( but you know that ) I dont think anyone will say she does, or does not have anything that can transfer to your other chams- only a vet who sees her can maybe tell you that - but you have her pretty far from the others, and I am sure you are washing your hands realllllllly good-
good job on getting her to eat, I would try a roach if you can get your hands on any, they digest pretty easily, I dont feed meal or super worms because of the impaction risk ( only because w/ my luck , my chams would get it - )
keep us posted