There has been bad information given to iamheavyd, as was already said....but right now its not important where the bad/poor information came from or why....what's important is the chameleon's well-being. That's why I stressed the importance of providing the egglaying place now. If she passes "her time" to lay the eggs she will be in trouble. (She may already be.)
If she is being feisty with you iamheavyd, put a wadded up cloth in your hand and let her bite on that....but don't pull it away from her....you don't want to damage her teeth. While she is busy with the cloth put the container in the cage for her to dig in. When empty the container should be big enough for her to fit into with at least a couple of inches of space on all sides, including above her. It can be filled 2/3rds full with washed playsand that is moist enough to hold a tunnel, but not sopping wet.
Once the egg laying problem is solved, then the cage issues and husbandry can be addressed.
If your other female was looking for a place to lay eggs too, then the same should be provided for her....and she should be in a separate cage.
If you don't have time to get a cage for the second female...go to the store and buy a 65 liter rubbermaid type container with a lid and cut a big hole in the lid and screen it over. Put the rest of the bag of sand in one end and add a branch or two. Put her in it, put the lid on and put a light over the screened part of the lid. Be aware that a closed container will hold the heat, so don't cook her.
If you are having trouble getting close to either of the females, you can encourage them to move onto a branch/stick and move them on that.
If you need any more information about any of this, please let me know.....and I will try post information later on proper husbandry and cage setup.