You said..."she does spend alot of time clawing around at the bottum of her cage... wierd"...no, its not weird...sounds like she might be looking for a place to lay her eggs. Does she have a suitable place in the cage to dig in to lay her eggs? If she's looking for a place and you haven't provided her with one, she could die eggbound.
What I do for all my egglaying female chameleons is to put a container filled about 2/3rds full of washed sandbox sand. I have a specific brand that I use...produced by King...comes in a white bag with red, blue and yellow sandbox toys on it. I use this kind because if they ingest it, it doesn't cause impactions. The container, when empty should be big enough for the female to fit into with a couple of inches to spare on all sides.
Once my female starts to dig intently in this container, I move her to a modified 65 litre rubbermaid container. The modification is to cut away most of the lid and screen it over. I place a bag of washe sandbox sand in the container, place a branch in the container, put the female in the container and put the lid on. Because I put screen over the hole I cut in the lid, I can lay a light on the top of it to keep the female warm (and provide light for her, of course, too). She can be fed and watered while in this set-up...but make sure that you don't leave any insects that she doesn't eat in with her or they may nibble on her or the eggs. A plant or rock can be put in the container too since some chameleons like to lay their eggs at the base of the plant or near the rock...just be sure that the rock is on the floor or the container so that it won't collapse on her.
I recommend that you don't let the female see you watching her when she is digging the hole. I also recommend that you let her finish burying the eggs and return to the branch before you disturb her. I don't recommend breeding a female before she is about 1 year old.