You've got several issues with her setup that are probably causing her problems. First of all, her temps are far too cold, and without proper temps she cannot digest her food or absorb any nutrition or the calcium and multivitamin powders you're giving her.
Basking Spot: Between 98-103 degrees
Hot Side ambient (surrounding the basking spot): between 88-93 degrees
Cool Side ambient: between 75-80 degrees
So you can see that her basking spot temperature is far too cold for her to be able to process her nutrition. She may be a bit anemic.
Exactly what brand, model, wattage, and type (compact, coil, tube, or mercury vapor bulb) of
UVB light do you have? Is it mounted on top of a mesh or glass lid, or inside the enclosure? Does it have a reflector behind the bulb? Does it have any clear plastic cover on the fixture over the light bulb? How far is it in inches from her basking spot?
What wattage and color of basking bulb are you using? Is it right alongside her
UVB light and over her basking spot?
What is her daily diet? I did not understand what you meant by "she eats RepCal formula"...She's well over a year old, so she should be eating appropriate fresh greens daily with appropriate veggies, and appropriate live feeder insects 2-3 times a week. Appropriate greens are collard greens, mustard greens, turnip greens, Dandelion greens, arugula, endive, escarole, chard, and bok choy. No kale or spinach due to their high oxalate content, and no lettuces of any kind, they have no nutritional value at all. Appropriate live feeder insects include gut-loaded crickets, roaches, BSFL/Phoenix Worms/Reptiworms/Calciworms (all the same thing), Silkworms...No mealworms at all, wax worms and superworms are great occasional treats... You're using a DIGITAL PROBE THERMOMETER, so that's good, but you need to get a higher wattage, bright white basking bulb to get her temps up ASAP, along with an appropriate 10.0 UVB tube, an 18" or 24" long tube and matching flourescent tube fixture. The two beardie appropriate brands of tube UVB lights are Reptisun 10.0 (never 5.0) and Arcadia 12% or 14%.