place a 3-5 gallon empty paint bucket or 12" bin (all new of course) and fill it up with washed play sand. leave about 2" from the top. place it in her cage and leave her be. do not feed any more fatty foods like wax worms, wax worms dont really even serve a purpose in a healthy chameleon's diet.
just leave her be and give her all the privacy she can have, even cover the front of her cage with a pillow sheet or something.
if she catches you or anyone watching her or keeping an eye on her, she can abandon the hole. stop digging completely, and become egg bound which will result in a vet vist. oxytocin injections, or the worst.. surgery. most likely she will die.
i've had it happen
best of luck