This is not a female. This is a male with extreme MBD issues and probably a lot more going on. He is a translucent male so his coloring you can see is pulling orange, peach skin tone, black and white. These colors are normal for a pied or translucent veiled chameleon morph.
Note the fact that it is a male gives it a better chance. Females with this extent of MBD typically do not make it due to reproductive issues and the inability to lay their eggs.
Vet if it is a good reptile vet will take an xray to see what the bone density is. Put him on liquid calcium without D3. UVB lighting being on point, Cage set up, and proper nutrition and supplementation will be extremely important.
For the cage you want either a hospital bin set up or a screen cage even a 16x16x30 set on its side so the height is only 16 inches. Then lay in lower branches to the floor and live pothos would be best with strong vines for him. Until he has the strength to move around with a proper grip you want to avoid tall cage set ups because he would be high risk for fractures if he falls.
Additionally every single thing the original owner said they provided was wrong. They did not seek out proper husbandry this could have been avoided completely with T5HO UVB lighting, supplements and a proper set up not an aquarium. Due to the aquarium have the vet check for signs of a respiratory infection as well.