greenie...its important to know if she laid all the eggs or not. 4 is not a normal clutch and if she is dropping eggs and not digging a hole to lay them in that can be bad too.
Docility...generally a chameleon should be able to lay an infertile clutch without having to be mated and not die from it. Years ago it was said that they had to be mated or would die eggbound. Its not true that an unmated female will die eggbound...with the following exceptions.
Constant overfeeding can lead to egglaying problems (as well as constipation and possible prolapse). Other improper care (such as poor/imbalanced nutrients in the diet, lack of UVB, inappropriate temperatures, LACK OF AN APPROPRIATE PLACE TO DIG TO LAY THE EGGS, etc.) can lead to egglaying problems. Physical issues (fused/deformed eggs, reproductive system irregularities or deformities, eggs that have grown too large to lay, etc.) can also lead to eggbinding.
Follicular stasis is also a problem when it comes to reproduction. Its less understood than egg binding and the only solution for it seems to be spaying the chameleon. (Follicular stasis occurs when the follicles stop progressing towards ovulating so they never become eggs.)
Hope this helps to explain it all!