Okay, I see a few things that could be adjusted and could make a huge difference. She still looks okay, but is losing weight, so we need to get her setup straightened out ASAP.
As I suspected, there are two things that are less than great about your lighting. First, that ESU UVB bulb is junk. Toss it! It does not put out quality light or UVB. You really need to get a better UVB bulb ASAP or she will start to develop MBD. It could also be hurting her eyes.
The second thing is that her tank, except for the basking spot, is rather dark. Beardies are full daytime critters and need bright ambient light with hides where they can retreat if they want to. I bet she is simply having a hard time seeing. So, I urge you to get a Reptisun 10 UVB bulb, and remove that tape from around the hole where your basking beam is shooting in. We want to brighten up that tank, and get another hide of two for the cooler parts of the tank. But we want to do that without raising the ambient temps. Did you get that cool side temp down some more? There needs to be a cool spot that is below 80 in case she is overheating.
Now, with Florescent UVB bulbs, you need to expose her to within 7-8 inches of the bulb, or it won't do any good, so I would go down on the wattage of the basking bulb and get a different basking setup that raises her a bit, to within 7 inches of the top, then re tweek your basking temps. Then make sure that the uvb bulb is right along side the basking bulb so that she definitely gets uvb while she is basking.
These bulbs can be trusted for 6-8 months, and then they need to be replaced. I use Mercury Vapor bulbs that last 3 times as long, put out much better uvb, and provide heat, so it is the perfect basking bulb. But you might need to wait, because it looks like you do have a 20-30 long, and MVBs are too hot for small tanks. They are the best, so that might be an idea for the future.
You might want to visit this thread. It is full of setups and can add a visual to what I am saying
http://www.beardeddragon.org/bjive/v...ilit=vivs+only
Then do get the soy yogurt. It will give her a boost of fluids, protein and gut flora. I have found that beardies love it and it really perks them up. I buy Stoneyfield Farms O'Soy at Walmart or Super Target.
Well, let me know if I have just given you way too much to process!
Beardies are really hard to set up, but I promise it gets easier and a lot more fun once you get it all working.