Monkey is a picky eater as well, the breeder was feeding her crix and mealies when I forst got her and she was SKINNY....now she's nice and fat.
I bought her mealies as a treat and she won't even look at them, she won't even eat butter worms.
Mealies have such a hard chitin that they really shouldn't be used as a staple, there's barely any nutritionaly value when feeding them, hey should be used as a crunchy treat basically.
Are you checking your temps with a digital thermomter with a probe?
I would really look into getting a thermostat or a rheostat, the fluctuating temps are not good and UTH's have been known to rocket sky high for no reason and cook lizards and snakes....
Also you said her temp gets as high as 93, it really shouldn't get over 90, anything over 90 can be dangerous.
Just trying to help, hope I'm not coming across as a know it all but this is something I've been very anal about (my UTH's, thermostats and temps)I've heard so many horror stories and generally when a lizard isn't doing well or has a loss of appetite it has to do with the environment.