The UVB and the basking lights should be at the top of the cage.
What is the temperature under the basking light at the spot where the chameleon can sit to bask?
Your cage needs lots more branches and plants. When you have a veiled the plants should be real, non toxic and well washed...both sides of the leaves because veileds, especially females eat plants sometimes.
How are you providing water for her?
Once you move the lights please tell me what the temperatures in the cage under the basking light and the rest of the cageare.
For a lay bin you need an opaque container at least 12" X 12"X 9" filled with washed playsand that is moist enough to hold a tunnel. In her present condition she won't be able to dig a hole and may not even to be able to lay eggs if she needs to...so I would dig a hole for her. The bin needs to stay in the cage.
There's more to discuss about husbandry...but this is enough for now.
When a chameleon has MBD (bone disease) her bones are weaker and thinner and break easily. The muscles are also compromised which likely is why her tongue is coming out. The nutrients need to be provided for her and brought back into balance for her to heal...so in addition to giving her the calcium (be careful not to get it in her lungs) she needs, proper UVB lighting, proper temperatures, proper watering, healthy insects that are well fed/gutloaded and supplements dusted properly in the insects.
For dusting it's recommended that you use a phos free calcium powder at almost all the feedings lightly. Twice a month dust lightly with a phos free calcium/D3 powder, and twice a month with a vitamin powder that contains a prOformed beta carotene source of vitamin A. PrEformed sources of vitamin A can build up in the system...so thisleaves it up to you to decide if it ever needs preformed vitamin A. D3 from supplements can also build up in the system so we just use it twice a month and let the chameleon produce all the rest of the D3 it needs from its exposure to the UVB.
The insects like crickets, roaches, locusts, superworms can be fed
Dandelion greens, kale, collards, endive, escarole, squash, zucchini, carrots, sweet potato, sweet red pepper, etc.
Can she eat the way she is? If not there is a recipe for bug juice that you can feed her but if you water or feed her in the condition she's in, you have to be sure she doesn't aspirated the water...get it in her lungs.
Bug juice...
https://www.adcham.com/html/husbandry/bug-juice.html
I'm not a vet, but I see no purpose in pedialite baths...just my opinion.