Deffinitely keep her separate, but don't move her anymore, especially if she is a recent acquisition (ie in the last week or two). Get a fecal done, as soon as she provides you with a sample. As B22 suggests, get rid of the meal worms, they can cause impaction problems with young dragons.
Try small sikworms (one inch or smaller), waxworms or butterworms. Though waxworms shouldn't be fed in volumn, to get her to start eating food, it can be used. the other two worm types can be fed instead of crickets.
Make sure she is well hydrated, if dehydrated, they don't eat as much. Give her some baths, to make sure she is getting enough water, if she isn't drinking from a water dish or when being misted. Keep her in a relatively low traffic area of the house, out of sight of other larger dragons. (it is possible larger dragons are making her nervous, so she doesn't want to come out, even if they are across the room for her. Line of sight is all they need to be intimidated).
Some low fat non sweetened fruit yogert (without aspitain or other artificial sweeteners if possible) can be offered. This has the benefit of promoting beneficial gut flora without having to buy special stuff. THough yogert shouldn't be offered frequently, it is good for dragons who are not eating much and showing signs of starvation, or to get a picky eater eating more. If you can't find fruit yogert without artificial sweeteners, buy plain low fat yogert and add pureed fresh fruit (mangos, peaches, apricots, etc will work). Give some to your dragon and enjoy the rest yourself LOL.
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PHLdyPayne