First off, congrats on your new chameleon girl!
She's so cute!
Your future questions will probably get more attention if you post them to one of the other forums here (like the Enclosures And Supplies or Health forums.)
The very first things I would do are get rid of the substrate, get a long tube Reptisun 5.0 bulb and fixture , add leafy non-toxic plants and add a dripper.
If you don't have any means of checking temperatures and humidity, then add a temperature/humidity sensor to the list.
We just had a forum member's cham accidentally choke to death on a small piece of bark. The bark was from a branch and was a freak accident, but you now know what can happen with bark. If they don't choke, it can cause intestinal blockage--another often fatal problem.
She desperately needs some better non-toxic plants (ficus, schleffera,pothos are popular).
What she is on in the pics is basically a bunch of living sticks--cause there aren't any leaves!
The plants leaves serve 2 purposes in a chams cage:
1) She will drink water off of them
2) Equally as importantly, she needs them so she can hide from predators--that's her instinct. BTW, people are giants compared to chameleons, so chams don't realize that we're not interested in eating them.
Many chams do eventually seem to recognize their owners and relate thm to food, but they are not like bearded dragons, in that chams are better-off with as little handling as possible---Especially while they're getting used to a new cage, new plants, new everything.
Maybe it's just the pics, but she may be a bit dehydrated, as her eyes seem a little sunken-in.
I'm assuming they sold you a spray bottle for misting the enclosure?
The idea is to both raise humidity and to form droplets of water on the leaves for her to drink.
The dripper provides a longer-term water source for her. You want it to drip onto leaves.
A dripper can be purchased or you can very cheaply make your own using any type of clean container and putting a pinhole in the bottom.
Mine are made from those disposable Glad food storage containers--cheap, but effective.